1. USMLE World QBank 2006 and 2007. You can download a sample at http://www.megaupload.com/?d=7RDEY56X
2. Kaplan QBank 2008. You can download a sample at http://www.megaupload.com/?d=BBXR8V6B
3. Kaplan QBook and Kaplan Lecture Notes 2008-2009. I can provide you with links of these for free.
I have materials for Step 1 and 3 as well.
All are as editable pdf files. Very convenient to use. You can highlight them and add your notes on them for later revision, not to mention the time (and money) they’d save you. See the samples for yourself.
If you’re interested, you can contact me at email@example.com , and we can discuss the price and the details.