static extern uint GetProcessImageFileName(

Declare Function GetProcessImageFileName Lib "psapi.dll"

Public Shared Function GetProcessImageFileName(

From MSDN: The GetProcessImageFileName function returns the path in device form, rather than drive letters. For example, the file name C:\Winnt\System32\Ctype.nls would look as follows in device form:

GetProcessImageFileName(pic, fileName, 2000);