Having no crystal ball to hand it would be difficult to give advice that would sort your problem - might might head you to the right place.
Make of computer?
Operating system? - browser email client?
What security software are you using?
Is this a virus or malware?
What information/warning windows did you get - error events etc?
What have you tried to do to rid your system of this malware - have you scanned recently and the results?
Do you know a reputable computer shop - not a multiple type. One where they will need your OS discs to clean and reinstall the operating system for you and make sure they have a backup disc of your docs etc.
Do you backup your system regularly?
Do you know what system restore is?
If there is a need to do a complete system restore, do you have the OS discs etc?
Sorry, the list can go on, but albeit the advice given so far, sound as it is, nothing individual will sort you out.
Have you heard of newsgroups - they are the best for self help, have the best in the business, give their time free and know more about hardware/software than the manufacturers own technicians.
If you can answer the first six questions, you are welcome to email me at my spamtrap address, which is 'munged'
Just remove 'spamkill' and you will have the address.
[email protected]
Yes Virgin do have PCGuard - it is good, but like Norton and McAfee it is 'bloatware' - I would not have any on my system.
Good luck
Antioch