Just found this: Here is the detailed process to watch the memory and handle counters for your process. This is applicable for Windows 2000 but should be same for Windows NT and Windows XP, as well. Open perfmon by clicking Start, Settings, Control Panel, Administrative Tools, Performance. Click the Add counters tool box(the tool with the + sign). It will display the Add Counter dialog box. Check the 'Use local computer counters' radio button. Select Process under the 'Performance Object:' drop-down combo box. Select the 'Select counters from list' radio button and select 'Handle Count' and 'Private Bytes' from the combo box. This box is a multiline select combo box. Select the 'Select instances from list' radio button and select your application from the combo box just below it. Press the Add button, followed by the Close button. This will open the perfmon window. You will see two graphs each for memory (private bytes) and handle count. Run your application and you will see the present status of memory usage and open handles for you process. If any of the counter values increase continuously without being stabilized, there are memory/handle leaks in the application. Here: http://www.codeguru.com/Cpp/V-S/debug/memoryissues/article.php/c4411 While testing Vue Pro, I just watch it increase continously until it reach 10,000 and froze.