Outlook sending spam?

My outlook keeps sending spam mail from my e-mail account to people, it deletes the sent items to cover its tracks and i only found out when i got some mail delivery error messages. i thought i had cured this before with the anti-virus and spyware software but it cant have worked, has anyone else experianced this and how can it be cured

Outlook sending spam?suzuki

I don't know how to manually get rid of it, good antivirus should get rid of it. So in addition to sirhelpa... above, make sure your firewall is activated as well. I'm also going to update this message in a few minutes with some other tips about some of the windows services which pose a security threat.

Go to start, run, type msconfig, select services

Telnet. Disable this as it can allow users access to your system remotely.

SSDP Discovery Service Disable this, even Microsoft says it's a security risk.

Security Accounts Manager Disable This is like Protected

Storage, it's a security risk and needs to be turned off.

Remote Registry Service Disable. This allows remote users access to your registry.

Remote Desktop Help Session Manager Disable.

NetMeeting Remote Desktop Sharing Disable, Very bad idea to leave this on manual or automatic. Net meeting users can view your desktop with this service.

Messenger Disable Disable this one! This is the dreaded Windows Messenger service, not to be confused with MSN Messenger. This service was originally made for administrators to send you messages over the network. This service is now being exploited by spammers to send you popup messages from over the Internet! Disable it.