You should do some cleanup after running the program in the link below.
Install Super Antispyware. Run it in safe mode. Allow it to quarantine whatever it finds. http://www.superantispyware.com/
Install Ccleaner. Use the default settings for running the cleaner to remove temporary files, logs, cookies, etc. Do not use the "Issues" button for cleaning the registry or any of the advanced settings in the cleanup settings.http://www.ccleaner.com/
Delete all the system restore points and then turn the system restore back on. Info and directions are in the link below.http://www.bleepingcomputer.com/tutorials/windows-xp-system-restore-guide/
Please let us know if you still have symptoms of malware or any problems.