Programs like AdAware
and Spyware Blaster
(I use both) can help your computer in general, but they really don't help with spam emails as I understand it. There are several things that can help, but nothing will completely get rid of it. This is information I was told and it makes sense.
1. Get a junk email addy (I use Yahoo). I also have one for forums and my private one for family and close friends.
2. Never click on unsubscribe unless you know the company (Like Gap, Target, etc) Those random "you win!" and "morgage company" emails, etc are a nono.
3. Never send bulk emails. Always use BCC and tell your friends and family to do the same. Some trojans and spambots go through and send viruses or spam to emails in your system. If they are BCC they can't see them.
4. Ask your cable company or server if they have spam software. My cable company does and it deletes known spam at the server so I never see it. I do get some, but not near as much as I used to.