Hello oyehia,
If the computer is still lagging and has issues, please start another topic in the Malware Removal Forum
First see that forum's FAQ which also includes instructions in post #2 on how to provide DDS and aswMBR logs, which are used in the preliminary analysis.
http://forums.spybot.info/showthread.php?t=288
Please provide a link to this thread as it contains pertinent information such as combo fix being ran and...
Otherwise I can link you to a Windows forum for technical advice.
Best regards.