Bad Luck! You've just joined the thousands of us who's e-mail addresses have been harvested and distributed amongst the brainless low-life that create spam e-mails.
We've had lots of threads on this topic and there are too many to reference them all for you but there are some simple rules.
1. The sender may not be who the e-mail says. It could have been send using a proxy address so there is no point in relying.
2. Never open attachments from somone you don't know. Even if you know the sender, be suspicious. (See Rule 1).
3. Never reply. That only proves to the sender that the e-mail address is live. You'll only get more.
4. Make sure your Anti-virus software is up-to-date.
5. If you are in Outlood Express, disable the preview pane.
6. Never join in with chain e-mails. You give away others' e-mail addresses as well as helping to clog the system.
7. Get used to deleting without reading. Remember what curiosity did to the cat!