Hi Imnope1,
It seems you have a broadcom wireless card, and a problem almost identical to this: http://forum.backbox.org/general-support/problema-durante-l%27installazione/msg5561/#msg5561
Don't know if you understand the italian language (google translate could provide you an idea of the discussion), but basically, during the installation, there is an issue with your wireless card.
However be sure, for all the methods listed, to uncheck the box relative to the download of updates and packets at the beginning of the installation process, avoiding to have your wireless card wrongly detected again, due to packets download.
If you can disable the wireless via BIOS configuration panel, than the OS should not detect it and never load its modules. Than, once the installation is finished, you can bring your wireless card up and reinstall the packets you need to make it work. The user in the post i linked above needed the b43_legacy drivers, so, if this is your case too, you can reinstall the right driver after the installation.
You can also try this, removing your wireless packets, or blacklisting them, on a persistent -persistent- live usb.
The user solved by blacklisting the b43 module, which generated the conflict, as boot parameter in the grub (i think editing the backbox entry at the line starting with "linux") adding:b43.blacklist=yesthen proceeded booting the BackBox kernel just modified and installing it, and in the end reinstalled the right drivers after the reboot.
This methods worked for him, so you can try this first. Maybe try to contact him in private if you need more details, and in the case you solve you could post the solution here...
Should not be an unsolvable problem 

Good luck!
Enjoy BackBox.

so, I tried the method you proposed, but I got no luck. it crashed when it got to installing USB drivers.....

I'm trying installing it plugged into my modem now and with updates on. maybe the driver that keeps messing me up got updated? I really don't know. I'm trying anything at this point.

Wait Imnope1

it crashed when it got to installing USB drivers

that's exactly what we want not to happen... you have to install you drivers after the successfull installation on the HDD, avoiding the detection of your wireless card before and during the installation process.
Try to make these steps (I edited these lines after successfull installation, so you see strikethrough over the initial resolution attempts  ):

• Since you haven't the possibility to boot from USB, boot from your DVD. When it shows menu containing the BackBox entries in various languages, press 'e' [TAB] to edit the line with the version you want to boot
• Now you got a line to edit: add b43.blacklist=yes after the words "quiet splash" to the end of the line starting with linux or kernel, without touching "--" at the end of the line.
• Save and boot the entry you have just modified.
• Once booted into your BackBox, plug in your ethernet cable and start the installation
• Uncheck the boxes relative to updates downloads, hardware detection, third party modules, and similar, if there are (don't remember well... in general uncheck all that could cause a detection of your wireless card)
• Start the installation and wait, crossing your fingers... 
• Once (hopefully) installed, reboot the machine, remove the DVD, and you should be able to boot in BackBox (directly or via Grub menu, depending on what's your installation type)
• Now install the right drivers for your wireless card, you might need to take a look here: http://linuxwireless.org/en/users/Drivers/b43

Thanks for the logs, but I have no time now to check them... possibly i'll do it later.
Good luck!

Oh yes you're right. It's [Tab] that enables editing... and I was referring to a grub HDD installation... sorry.
I'm just checking in virtualbox if it's possible to blacklist a module editing this type of lines, never done before... I'm supposing "--" has to stay in the end of the line.
Stay tuned.

[EDIT]

OK, i was able to blacklist bluetooth module as test!
In your case, simply insert b43.blacklist=yes after the words "quiet splash" in the entry you have chosen with [Tab]. Don't touch "--" at the end.
Then follow the steps listed above from 3rd point going on...
(I corrected the above list of steps)

Keep us up to date.

[/EDIT]

Ehy Imnope1, I'm glad for the successfull installation...
[OT] anyway nobody is a genius, unfortunately reading and studying is never enough to follow the technological progress coming from millions of human minds through the world. There's always too much to learn, so never stop your curiosity... this is the essence of hacking 

Anyway, can you specify in a better form the error you are getting now? I mean: is BackBox installed? Can you work with it? Does it boot without DVD, that is from your HDD? You "hit install drivers" where? How? What's the "same error" you're telling about? Does it boot again after this?

P.S. Two things more: I'd change the title in something like "Installation failure with broadcom wireless card [b43]", because it's not a MacBook problem. When you think the issue is solved you can edit the title adding "[SOLVED]" in front of it.
Also, when you have to write something, and you see the last post in a thread is still a post written by you, don't hit "reply", but edit your last post clicking "Modify", thus having less confusion. Simple forums rule, not a critic 

Enjoy

Oh, let's say it's half-solved...
Anyway i think you have exactly the issue of the user in the link i provided you in my first reply. He needed to run:sudo apt-get install firmware-b43-lpphy-installerbut don't know if this is your case too. To be sure try reading something more here, and see what driver you need. Also remove the harware checking at startup if you want.
Oh, and thanks for the fixes

Bella b4d_bl0ck!
complimenti, ben fatto!
well done! =)