Trying to create a prestige class

[viana_qoh]

I've been trying to create a custom prestige class for my own use, but I'm stymied by the fact I can't find any useful instructions on how to create classes like this. I've gotten some things kind of working through trial and error and examining existing files, but I'm still confused.

I'm trying to make a level 10 arcane prestige class for my own use, with a special ability of a caster level bonus that increases every other level and another set of special abilities that enhances some saving throws, plus a couple of other extra abilities. Also trying to figure out how to require a prerequisite of specialist wizard.

The setting up of the class isn't the hard part, it's getting it to recognize the special abilities and at the proper level - and of course I also have no idea how to make the abilities actually take effect on the character as I'm a n00b at best regarding XML.

I would really appreciate if someone could either point me in the direction of instructions or help me figure out how to do this.