As of a few versions, you can no longer get the nice graphical Visual Studio profiler in anything less than the most expensive Team Suite edition of Visual Studio. For most people (namely, those that don't have 6 grand to spend to get a profiler), this isn't really an option.
Fortunately, Microsoft has been kind enough to release a command-line version of the Visual Studio 2008 profiler for free. If you need a profiler, get it. Fortunately for me, I got Visual Studio 2005 and 2008 Team Suites for free through my school via Microsoft Developer Network Academic Alliance; unfortunately, I won't be able to do that with Visual Studio 2010, so hopefully they'll make the 2010 profiler available that way as well.