Software Deployment

Hello, I am trying to determine if there is a uninstall string/option to remove SGE 4.3. All of our machines using XP have it installed and the server being decomissioned doesn't help, if i recall had some feature to help uninstall but I could be wrong. We are trying to upgrade everyone to Windows 7 using ZTI method but during our testing phase the process fails because when PE initiates it can't read the disk, by design i know. What I want to do is run the uninstaller, if available prior to launching ZTI. I don't need to apply that in the Task Sequence, just run it from a Collection the night before to uninstall SGE, then kick off the ZTI afterwards during off hours, etc.

I realize that there is a PE driver that can assist but unfortunately we don't have support maintanence anymore so I can't seem to get any help from Sophos.

Anyone have suggestion or a package to share removing this software?

4.3.0.6 is what we are using.

Eric