Welcome to the site.. First thing I'll ask you to do is ask your regular host via msn to Stop using Peerguardian 2. The reason I suspect hes using it? Your IP for your new ISP is on the P2P lists of Peerguardian, the exact reason we tell folks never use it. This also means no pglite either. The entry on Peerguardian is this one
Grant County Public Utility District 18.104.22.168-22.214.171.124
The IP you used to post here falls into this range of blocked IPs another range that Bluetack have deemed evil. Have a read here and have your host read this PLEASE!!Peerguardian: The Facts
That is the advice for your getting in rooms issues.. now on to why you cant host...
Ok for the hosting we would need to have one set up.. either strait wired into the PC or through the one of the routers to deal with. If your using XP be sure that you have that firewall either off or configured correctly to allow the right port for your room. Make sure any other firewalls your using are allowing WCS also. When your strait to the PC would be the best way to get this set up.
Check that firewall and also you might want to come by the help room and let us help you in real time.. I think this is just a matter of getting it set right and those users trying to get in NOT using peerguardian 2.
Look for me there Lady Ray.. send a pm if im not around or have anyone that does help you there read this thread so they know your issues please.