Downloading Photoshop CS2, but have an admin problem

I've downloaded and installed it, but everytime I go to open/load the program, it says I don't have the admin privileges and that I have to log on to an admins account.

Thing is, I am the admin on my computer so what is going on?

From where did you download it?

CS2 is no longer available

Hence my question.

Maybe it was downloaded from the Adobe FTP site, where a trial still exists.

Maybe natashaxx is using Vista (how would we know with this poorly explained issue?). If so, turn off User Account Control (UAC).

Must be a pirate version since she has not answered.