I use Micro Trend's PC-cillin antivirus software myself and it does a pretty good job of catching & deleting virus infected e-mails. It also offers a web filter and security feature and automatically updates itself.
Interestingly, yesterday it caught the latest fraudulent Microsoft e-mail worm virus. That infected e-mail had as it's subject, "Microsoft
Screensaver". Below is the Reuters article describing this virus:
SAN FRANCISCO - A new computer worm that disguises itself as an e-mail from Microsoft Corp. is spreading, computer security firms warned today. The
e-mail containing the worm, dubbed Palyh or Mankx, appears to come from firstname.lastname@example.org, but is not from the software company.
When the attachment is opened, the worm copies itself to the Windows folder, scoops up e-mail addresses from the hard disk and starts sending itself
out, said U.K-based Sophos. The malicious program can spread itself to other Windows machines on a local area network, anti-virus vendors said. It
also can secretly install spyware programs on infected computers that could eavesdrop on the computer user, according to Moscow-based Kaspersky Labs.
It began spreading on Saturday and has apparently infected computers in 69 countries, according to MessageLabs.
A Microsoft spokesman said the company never sends out unsolicited mass e-mails with attachments.