I have the impression you want to try -s or -r as silencers. Put it as argument behind uninst.exe

Shell '%comspec% /c C:\WINDOWS\uninst.exe -s -y -f"C:\Program Files\Pivotal\Relation\DeIsL1.isu" >NUL 2>NUL'

No warranty it will work. Like Doc said, I think you best verify with the software vendors.

Oh yes
> NUL
redirects to "nothing"
> NULL
redirects to a file named NULL

Edited by Witto (2007-01-31 09:07 AM)