installing photoshop CS3

I am trying to install photoshop CS3 but am having problems. I downloaded the beta when it was avaiable and now whenever I try to install the actual CS3, it says that the task cannot be performed because "there is a conflictb with Adobe Photoshop CS3." I already tried to appzap the progam but it still thinks it is installed on my comp. Any ideas? This is very annoying.

There's a CS3 BETA removal kit somewhere. I've used it and still have it with me (it weighs in at around 5MB I think).