Coding a page changer in vB 3.0.9

[FatalBreeze]

Hello, im a pretty nooby coder and i wanted to ask what is the procedure of making a few pages in one script. ermm probably you didn't understand me so ill give an example, inside a thread, there is lets say 300 posts, and in the admincp ive chosen to display only 10 posts in a page, so there should be 30 pages.
my question is, how do i create those 30 pages, i know there are some functions to do that, but i didnt understand what exactly needs to be done, with the upperlimit and the sanitize and all...

Thanks