Open notepad and copy/paste the text present inside the code box below:

Registry::
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"MSC"=-

File::
c:\program files\Microsoft Security Client\msseces.exe

SecCenter:: 
{3F839487-C7A2-C958-E30C-E2825BA31FB5}
{84E27563-E198-C6D6-D9BC-D9F020245508}

Save this as CFScript.txt

http://img.photobucket.com/albums/v666/sUBs/CFScriptB-4.gif

Close all browser windows and refering to the picture above.

Referring to the screenshot above, drag CFScript.txt into ComboFix.exe.
ComboFix will will re-run. When finished, it will produce a log for you.
Attach the contents of the log in your next reply. (typical location: C:[b]ComboFix.txt[/b] )