what program to use?

I've been looking into buy a photoshop program but there are so many different versions. Which version should i get. I already have the photoshop album but i want to be able to create images of my truck.

adobe photoshop cs2
if u want a cheaper one that has the basic stuff cs2 has, get adobe photoshop elements 4.0
i use the elements 3.0 a lot
good for uploading and organizing pics from ur digital camera too