...
I just fixed the problem...heh.. All I did was format the whole disk (using NTFS in winxp setup) and install a fresh copy of xp. The installation didn't give me any error of corrupted files so it really went well. I installed all the drivers, DirectX... Then I downloaded the .901 version of the game...I ran it and it worked

! I could go in and out without getting the themida error. Then I just "upgraded" it into 1.011 version and it works without an error now. I'm so happy heh.
I suspect that I did have that win32.virut.cff error on my computer...and I got rid of it...sweet.