My IP was blocked too. Thanks for fixing it right away Rich.
What I read said it's possible that my computer's been "zombified", or hacked into by a virus that sends spam from it. It said comcast users have a problem with this.
http://news.com.com/2102-1034_3-5218178.html
I was able to access the forum using a proxy but the server would still not let me post any thing. Of the proxies on the list few work and many gave me an IP that was blocked too. Last night I turned of my router and modem hoping that would work but by then you had fixed it.
I ran a virus scan on my computer and deleted some files but I dont know if the other problem is solved. Some of the websites recommended downloading a Firewall. I already have one from Windows do I need another?