Whatever you do DON'T hit the button or link to be taken off their mailing list.
All this does is let them know that it is a valid address, and it will be sold to other spammers with a notation that it IS valid.
These low-lifes buy CD-Roms with a few million addresses on them. If they know it is truly a valid address, they put it on a list of "Guaranteed" addresses, and sell them for more money.
There are several states (Arizona is one) that is pushing legislation to outlaw mass email spamming.
You can also configure Outlook Express to block emails from certain senders, and also create "rules" that will send messages containing specific words directly to the "deleted" file.
Click on "tools", then on "message rules" and create your own rules to get rid of the trash.
Good Luck