How can I read the dmp file created by perfmon?

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http://serverfault.com – I'm trying to debug a memory problem on a client web server that I have no access to. The client, with some help from Microsoft consulting, set up a bunch of perfmon counters and just sent us the results, in the form of a massive (750MB) binary file with a .dmp extension, and I have no idea how to read this file. windbg is the only tool I can find for dmp files, but that's about stack frames and crashes, not log data. perfmon itself doesn't seem to know what to do with this file. It's entirely possible that the client messed this up, but I'm on the hook to make some sense of this file. (HowTos)