you have to use the process and processstartinfo class which can be found in System.Dignostics nameplace

Here is the sample code

using System.Diagnostics;

process p=new process();

p.startinfo.FileName="mspaint" //or path of any exe the current wil start a ms paint processs

p.start();

write this code behind buttton click event

ya i have to open the process in my own application.

Can you clarify if you want to open(start) another process through your own Application (which depends on your role level ) or do you want to access an running process ?

Clarification will be well appreciated ..

Regards
Prasoon