You have been infected by a virus which has hi-jacked your MSN ID and is sending messages with a mal-ware payload to everyone in your contact list.
First step - install a proper (paid-for) anti-virus solution and dis-infect your PC.
Alternatively, you could kill 2 birds with 1 stone so to speak. Install your new hard drive as your 'C' drive, with your existing drive as 'D', and install XP (AND your newly-purchased anti-virus program as a clean install.
Scan the 'D' drive and clean it, then copy everything you want to 'C' and remove 'D' (format it first for security). Alternatively, you could remove all the system files from 'D' and leave it in as additional storage. Put the windows swap file on it for a significant increase in performance.
phil_saunders@bigfoot.com
Phil Saunders
May 2008