ok so ur answer is yes then this is a rootkit here are some tools:
Download http://public.avast.com/~gmerek/aswMBR.exe][aswMBR.exe[511KB ) to your desktop.
Double click the aswMBR.exe to run it
Click the “Scan” button to start scan
http://public.avast.com/~gmerek/aswMBR1.png
On completion of the scan click save log, save it to your desktop and post in your next reply
http://public.avast.com/~gmerek/aswMBR2.png
do tell me whether did this thing work or not if not then i have some more simple tools in the backup.