Is the server actually running? All windows opened with no errors?
P99 has nothing to do with the account, but if you see other servers I am assuming you're using an eq emu login account.
Does your non p99 client have the correct eq host info?
http://wiki.eqemulator.org/p?Play_Gu...etting_Started
I would assume if you see other servers it's not client related, but rather the server is not actually running. If you see no servers the client probably has issues. I have had working clients stop working... I usually just reinstall it. There is sometimes an issue that servers don't populate but restarting the client usually fixes the issue.
Really would need more info to not just guess. But if you set your server the 2nd time around to login server you need to point your client to the loginserver.