A highly destructive virus called "gigger" has been detected and
may pose a threat to us in the near future.

Here is a brief description of the virus:

The virus arrives in an e-mail carrying the subject line "Outlook Express Update" and an attachment named Mmsn_offline.htm.
The body of the message is "MSNSoftware Co." Once the virus is executed it drops several files and modifies the Autoexec.bat file so that the C: drive will be formatted the next time the machine is restarted.
Gigger then installs a script file to enable it to spread via the mIRC chat client and creates two registry keys and modifies a third key. Lastly, it deletes all of the files on the local hard drive.

If you receive an email having the characteristics described above, you will NOT be infected if you open the email to read it. You will be infected if you double-click any attachments.

As always, immediately delete any emails from unrecognised sources.
Do not, under any circumstances,
launch (double-click) an attachment from suspect sources.

The above message came from my companies IT department and should be very reliable information.

Jim