A small trick I learned long ago, to prevent your PC from spreading virus worms is to create a new contact in your email address book..... !000 that is,an exclamation mark and three zero's. It heads to the start of the address list and will be the starting point of an email worm... but it is an invalid addy and will be returned as UNDELIVERABLE MAIL !000 to your inbox and the confused worm will keep trying to send to it without moving down the list. This is no substitute for a good up to date Antivurus program, only stops it spreading. For my money Norton Anti-virus and Internet security saves my bacon around 10 times a week. Tommy.