Well i do have the same laptop, only i can't get my wireless to work.
Could you perhaps explain how you achieved this, and is it possible to use aircrack with it?

Well ive downloaded the usb version 4 times no luck.
CD iso also 4 times no luck.
nothing seems to help and this seems to be the case for everyone with a acer aspire 5520.
Not a single thing...

Well i've run into the same problem.
I've run backtrack and backtrack 2 without much problems on laptops before.
Now i just bought this new acer 5520 and backtrack 3 final just gives you a black...