Hi,
I have installed Unity free on my PC (Windows XP Pro), using the UnitySetup-2.6.1.exe download. And after a while, I realised I need to try out some Unity Pro feature.
I then uninstall Unity free, (even followed the instructions at http://answers.unity3d.com/questions/1808/total-remove-and-re-install,) then reinstalled Unity using the same UnitySetup-2.6.1.exe. But Unity did not prompt me to select the Pro license. So I’m still stuck with Unity free.
Anyone out there know how I might uninstall Unity free, and then install Unity Pro on the same PC? Thanks in advance.
Cheers 
joonyew