There are two (2) versions of the Acer TravelMate 5520; TM5520-5313 (LX.TKU0Z.001) & TM5520-5678 (LX.TKU0Z.003).
There are two (2) possible ways you can get Recovery CDs:
1. Purchase from Acer here
. You would need your 22 character Serial Number or the SNID which is 11 chars.;
2. Borrow from a friend with identical model, copy and burn to CD(s).
Alternately, you can install Windows Vista using an OEM CD (which again can be borrowed). You need to use the Windows key normally found in a sticker underneath the laptop. Thereafter, you need to download from the Acer website the appropriate drivers
and install. You would need to select your Product Line, the Product itself and eventually the driver(s) that you need.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
Thank you for using FixYa.