Normally you would not want to post a new issue in the middle of someone
else's thread. Your problems are not the same as the Original Poster's.
However, for efficiency's sake here is the answer - you have some
variety of the Smitfraud trojan. Go through the preparatory steps here:

http://www.elephantboycomputers.com/page2.html#Removing_Malware

Then do the specific removal steps here:

http://www.elephantboycomputers.com/page2.html#Smitfraud_Trojan

Include scanning with either Sysclean or Multi_AV, plus AVG Anti-Spyware
(formerly Ewido - http://www.ewido.net/en/) and follow instructions to
do all scans in Safe Mode.

When all else fails, run HijackThis and post your log in one of the
specialty forums listed at the link above (not here, please).

Standard caveat: If the procedures look too complex - and there is no
shame in admitting this isn't your cup of tea - take the machine to a
professional computer repair shop (not your local version of
BigStoreUSA). Please be aware that not all local shops are skilled at
removing malware and even if they are, your computer may be so infested
that Windows will need to be clean-installed. Have all your data backed
up before you take the machine into a shop.

If after you've done all that you want more help, make a new post with
full details per this link:

http://www.dts-l.org/goodpost.htm

Malke