I have a 'Belt and Braces' operation, that means I have all the precautionary software available. Visiting ebay.co.uk or ebay.com which ever is appropiate I have purchased Norton Systemworks 2003 (ŁUK8.00), with
www.RegVac.com which offers a trail download and then run Adware.co.uk. That plus running Windows XP Professional with a Zonealarm and an ADSL Modem/Router attached seems to keep my system clean and trouble free.