I've successfully created a MSI with all our companies preferred setting and licensing info, I can push this out via GPO however is there a way of uninstalling version 2.1 & 2.2 from the current users remotely via some tool or GPO?

I have played with the uninstall.exe for 2.2 & 2.1 to add it to the radmin 3.0 MSI install so it removes the previous versions first however this has not been to successful in my test cases!

Any ideas welcome

Anyone have any luck with this?

Removal through GP:
I've been playing around with a few options.
Here's what I've come up with:

Create a batch file with the following named 'RemoveOldRadmin.bat':

IF NOT EXIST %ProgramFiles%\RAdmin\uninstal.log GOTO NOVER20
%SystemRoot%\unvise32.EXE /S %ProgramFiles%\RAdmin\uninstal.log
:NOVER20
IF NOT EXIST %ProgramFiles%\RAdmin\uninstal.exe GOTO NOVER21OR22
"%ProgramFiles%\RAdmin\uninstal.exe" "%ProgramFiles%\RAdmin\uninstal.ini"
RD /Q /S "%ProgramFiles%\RAdmin"
:NOVER21OR22
RD /Q /S "%ALLUSERSPROFILE%\Start Menu\Programs\Remote Administrator v3.0"

Create a GP and have the batch run under the 'Computer Configuration', 'Windows Settings', 'Startup' script.

Just make sure that the 'Authenticated Users' group is placed on the 'RemoveOldRadmin.bat' file for read and execute security permissions.

The only annoyance received is at the workstation startup when the Remote Admin version uninstalls itself and the user at the workstation has to press 'OK' to complete the uninstall.