The following tips can help keep your PC safe from viruses while using e-mail and the Internet.

Do not open any files attached to an e-mail from an unknown, suspicious or untrustworthy source.

Do not open any files attached to an e-mail unless you know what it is, even if it appears to come from someone you know. Some viruses can replicate themselves and spread through e-mail. Better to use caution and confirm that they really sent it.

Do not open any files attached to an e-mail if the subject line is questionable or unexpected.

If you must open the file save the file to your hard drive and scan it with anti-virus software before doing so.

Delete chain e-mails and junk e-mail. Do not forward or reply to any chain or junk e-mails. These types of messages are typically SPAM.

Do not download any files from strangers.

Exercise caution when downloading files from the Internet. Ensure that the source is a legitimate and reputable one. Verify that an anti-virus program checks the files on the download site. If you're uncertain, don't download the file at all or download the file to a floppy and test it with your own anti-virus software.

Update your anti-virus software regularly. Over 500 viruses are discovered each month, so you'll want to be protected. Follow your anti-virus vendor's recommendations to keep your software up to date.

Back up your files on a regular basis. If a virus destroys your files, at least you can replace them with your back-up copy. You should store your backup copy in a separate location from your work files, one that is preferably not on your computer.

When in doubt, always err on the side of caution and do not open, download, or execute any files or e-mail attachments. Not executing is the more important of these caveats. Check with your product vendors for updates that include those for your operating system web browser, and e-mail.

Here is the security site section of Microsoft located at http://www.microsoft.com/security. This site is consistently updated by Microsoft with information regarding the latest virus' threats and any Microsoft software updates which can help make your Windows PC less vulnerable.