How do I view mdmp files from TF2 server crash?

[luv2sd]

I'm sure I posted this in the wrong forum but I couldn't find the right forum

I have visual studio 2005 and I'm trying to debug mdmp files I got from TF2 server crashes. When I try to debug them, it says no symbols are loaded. And when I open call stack windows, it says no symbols are loaded for server.dll.

Any help would be greatly apprciate