Whether you want to deifferentiate multiple processes of the same name or simply see which options were used to start a process, the Windows 7 Task Manager will let you view the command line. This may help in finding which process is using a file or differentiating sessions. The possiblitie are many.
To enable the Command Line column:
Open Task Manager
Pull-down View> Select Columns
Scoll down and check Command Line
Your Task Manager will now have a column that will show you the command line used to start the process.