Hi

I executed the following command from the DOS prompt:

runas /user:mypc.domain\dummyuser2 "C:\Documents and Settings\All
Users\Start Menu\Programs\Microsoft Office\Excel.exe"

I got the following prompt:
Enter the password for mypc.domain\dummyuser2:

After entering the password, I got the following messages:
Attempting to start C:\Documents and Settings\All Users\Start
Menu\Programs\Microsoft Office\Excel.exe as user "mypc.domain\dummyuser2" ...
RUNAS ERROR: Unable to run - C:\Documents and Settings\All Users\Start
Menu\Programs\Microsoft Office\Excel.exe
5: Access is denied.

BTW, I had to use the 'runas' from the command prompt because the
shift-rightmouseclick and 'run as' from the start menu did not work.

Thanks