Thanks for the informative link! Unfortunately, it didn't solve my problem. EXCTRLST works fine, so I know the counters exist and are accessible in some fashion. When I tried to run the "lodctr /R" command, I was told that I needed to provide a filename (e.g., "lodctr /R:[filename]") from which to restore. Should I have one of these around, or on the XP CD, perhaps?
I tried to find more information on what "lodctr" does, and came across this link about manually rebuilding one's performance counters: http://support.microsoft.com/kb/300956
Also, I have the export from "lodctr /S:[filename" (the opposite of "lodctr /R:[filename]"), which should show my current perf object values. Would it be helpful to see that here?
Finally, my user account is a member of Administrators, but just to be sure, I gave it the two permissions you mentioned, to no avail. the profiler should run as me and not need a service account to be added as well, correct?