On a Mac it is found in a file called PoserReg.dta
The file is located from your hard drive not user,
library:application support:Poser Pro:2.0.

Inside that folder 2.0 is the PoserReg.dta file. Just delete it and launch Poser and you have to put in your purchased serial number. Easier then doing a complete install.

Gary

"Those who lose themselves in a passion lose less than those who lose their passion"