Get free S/W (3)
Microsoft Windows Defender - use to clear rubbish from start up file (just 4 things checked in my list)
Spybot Search & Destroy - Remove Malware (weekly)
Piriform's CCleaner - Registry tidy up (6 monthly)
Defrag disk (annually)
Use Task Manager to see what programs are running and get rid of anything suspicious.
This might take as long as 90 mins but it won't cost you anything.
Peccavi
May 2009