Try running Combofix by doing this....

Click the Windows 'Start' button > Select 'Run' - then copy/paste the following bolded text into the run box & click OK.

"%userprofile%\desktop\combofix.exe" /killall

When finished, it shall produce a log for you. Post that log in your next reply.

Note:
Do not mouseclick combofix's window whilst it's running. That may cause it to stall.

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If you have problems doing the above then download http://www.techsupportforum.com/sectools/Deckard/dss.exe Deckard's System Scanner (DSS) to your Desktop. Note: You must be logged onto an account with administrator privileges.

Close all applications and windows.
Double-click on dss.exe to run it, and follow the prompts.
When the scan is complete, two text files will open - main.txt <- this one will be maximized and extra.txt <-this one will be minimized.
Copy (Ctrl+A then Ctrl+C) and paste (Ctrl+V) the contents of main.txt to here.
Please attach extra.txt to your post.
To attach a file to a new post, simply Click the[Manage Attachments] button under Additional Options > Attach Files on the post composition page, and
copy and paste the following into the "Upload File from your Computer" box:
C:\Deckard\System Scanner\extra.txt

Click Upload.

What DSS will do:
Create a new System Restore point in Windows XP and Vista.
Clean your Temporary Files, Downloaded Program Files, and Internet Cache Files, and also empty the Recycle Bin on all drives.
Check some important areas of your system and produce a report for your analyst to review. DSS automatically runs HijackThis for you, but it will also install and place a shortcut to HijackThis on your desktop if you do not already have HijackThis installed.