Joe, there are a couple of ways to deal with unwanted email:
1) If you're on a service that offers 'blocking' (like hotmail.com) you can open the message and click "Block" which then gives you the option of blocking only that specific sender or blocking all senders from that domain (the blahblahblah.com part).
2) If you're on a 'local' type of ISP (internet service provider) you can forward a copy of the unwanted email, preferably with expanded address information, to your own ISP (usually abuse@yourisp.com or help@yourisp.com) and request that they block them from your account through the server.
If you're on something like netscape.net that has no option for blocking and no &*@#%!^ help address (thank you very much, aol & netscape), you are pretty much on your own for dealing with the spammers.
I would suggest that you create an email address with an 'odd' character in it, such as a "+" symbol if possible so the spammers who are soooooooooo creative and use common names (joesmith@aol.com, joesmith@hotmail.com, etc) don't end up sending you junk, too.
