webhostingtalk.com is a good place to locate Colocation hosts.

I know a guy named Jon, that owns a colocation facility in Dallas Texas called Cologuys. http://www.cologuys.com/ E-mail em to see what kinda deals they have going on for colocation right now.

In fact, I'm currently looking for a new colocation facility cause mine went tits up two days ago... I'm not happy.