Something like BB-Code

Hey,

I have a photoblog and I want to create a plugin to make my posts much easyer to write. I want to make something like bb-code and when I post something like:
[image image.jpg "Text for the image"]
to display on the blog the image and the text below it. Also I want to add a votesystem for each image posted (I made one, but it’s to much code to copy and paste every time I post a image). I saw something like it in a plugin for contact, but I looked in the code and found nothing that interests me.
I don’t want you to post me a full code, I only want a link to learn how to do it.

Thanks in advance and please excusse my poor english (not my native language).