Error messages on RSS feed outputs

Hi

Made a new install using WordPress 2.01 for a new blog.

Search found me no help to solving the following messages and would be grateful for a newbie solution please.

Thanks

“The address type is unknown or unsupported

feed:http://www.girltalk.pcs-net.com/b2/?feed=rss2″

“The address type is unknown or unsupported

feed:http://www.girltalk.pcs-net.com/b2/?feed=comments-rss2″