I had stopped using Ad-Aware a while ago (no reason) but I'm sure it's still a pretty good program.
I'd look into a program called KeyScrambler: http://www.qfxsoftware.com/
It is also at addons.mozilla.org
The free version protects your keystrokes in Firefox only, pay version (which I'm using protects everything from Windows Logon to notepad++ and skype)
Malwarebytes Anti-Malware: http://download.cnet.com/Malwarebytes-Anti...4-10804572.html
AVG Anti Virus Free: http://download.cnet.com/AVG-Anti-Virus-Fr...4-10320142.html
Do full scans with each of these.
If these show nothing, and you are still concerned, you can burn a live CD of a Linux distro (I prefer Ubuntu). Besides not being able to run .exe files, it bypasses the Windows part of your HDD and runs in the RAM.
You should be able to manage bank accounts from that with relative saftey.
Edited by maki2012, 09 September 2010 - 01:15 PM.