connection blocked...

my computer won't go online... it's connected to the net via a phone line, but something is blocking the connection.

it seemed to happen after i ran ad-aware (which i've done a hundred times before with no problem, although not in a while) and out of the 120 pieces of spyware, 5 of them needed restarting to eliminate them. Unlike the other times I've had to restart before I could clean it completely, this time the ad-aware program didn't pop up before the computer was ready to use again, it just logged on as usual. But I couldn't get online anymore.

in messenger there's a message 0x81000301 when i start that up, if that helps.

thought maybe the virus program was blocking it, but i remember i had already tried to remove mcafee a couple of weeks ago, haven't found a replacement yet.

any suggestions?

thanks,

pk