>I've got the web sites set up, but I am only able to run one web site at a time. When I try to start two, I get the message "The network does not support this request."
>
>TIA

A more detailed description of what you are trying to do might be helpful.

What HTTP server and version?

Expand upon how your websites are setup:
subdirectories or multiple domains
ip based or virtual domains
dns server at isp or on lan
are domains properly configured on dns (check with nslookup or similar utility)