>The customer tells me that a process (inetinfo.exe) is using 100% of CPU. Does he check it by going to the Task Manager then clicking on the Processes tab and looking at the entery for inetinfo.exe in the column CPU?

Quite possible - this is one of the things to get a "feel" for problems or to identify runaway processes (endless loops and so on). Using Perfmon is also an option, but usually at a finer level to identify bottlenecks. There also is a NT/W2K/XP API which you can query for the amount of CPU - time used, AFAIR split into kernel and user time for each process ID [GetProcessTime ?] - helpful to map the CPU use to your running program.

HTH

thomas