How to split square photo into 4 equal parts

[Sylvia]

I have a 12x12 photo that I've tried to split into four 6x6 quadrants. I'm a real newbie to Photoshop, but I did find how I can show a grid over the photo, and how to crop from there. However, I seem to have to "guess" if I'm lining up the grid marks equally. When I printed out the 4 quadrants to reassemble on my project, they don't quite line up.
Thanks for helping.
Using Photoshop Pro X4, Windows 7 home edition.

[JoeB]

First, I am going to assume that you mean that you are using PaintShop Pro X4 (a Corel program) as shown in your profile, and not a version of Photoshop (an Adobe program) as you called it in your post.

Read this post in this forum:

viewtopic.php?f=56&t=66133

After reading through the post, then near the bottom of the thread is a post by LeviFiction with a link to a script that he created that will do exactly what you want.