Terminate Process

I'm looking on how to terminate/kill another process when my program closes. I am using WM_CLOSE in my program, so when I close my program, a selected process closes also. Example: My program is running and I open Calculator, as soon as I close my program, Calculator closes as well. [using c++] Any help would be appreciated, thanks!

http://support.microsoft.com/kb/178893

Just what I was looking for =] Searched MSDN with nothing...thanks for this. Will check back if I am having a problem, which I shouldn't!

Here is a code sample that demonstrates another method.