Processes and Programs?

How do i tell which programs are using which processes? Is there some type of software that will tell me? I have a stupid exe i am trying to delete and i looked in the task manager and cant figure out which process to close. When i try to delete the file it tells me it is being used.

http://www.dr-hoiby.com/WhoLockMe/

Run this and use it... it will tell you what process is using the exe you cannot close

thx alot

whats with the "..." ?

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:d