lokhor: I think with TouchWiz you can just drag the apps off and put new ones in if you have the application menu open. If you want to install Voodoo and have Root make sure you use the SuperOneClick root first and also make sure you don't have clockworkmod recovery installed or any other lag fixes. also backup all of your applications just in case.
Thanks. Three-day weekend ahead so will have time to have a play.
I'm trying ADW Launcher for today. Launcher Pro can be problematic on any phone. It used to occasionally fall over in a heap on the Nexus, but recovered immediately and carried on. If anything....it takes longer to die on the Galaxy S...and slows down first instead of just hitting the wall at 100KpH and going splat.
I was sending pics at lunch around via ADW and *so far* so good....no issues with performance or stability.