"You probably can’t avoid tech support problems entirely, but by using tools that Microsoft’s Global Escalation Services support team uses, you can obtain detailed Windows system and application information that can shorten a support call or even avoid it. In this first What Would Microsoft Support Do? column, Microsoft Escalation Engineer Michael Morales shows you how to use the user-mode dump heap (UMDH) tool (umdh.exe, one of the Debugging Tools for Windows) to diagnose a process memory leak on a system and use UMDH’s output to solve the problem more quickly." via http://windowsitpro.com/Windows/Articles/ArticleID/99933/pg/1/1.html
And of course for more debugging information check out the NTDebugging blog and this blog for further resources on the current state of Windows Vista and improving your experience with the OS.