Code Snippets

Hi Guys, Could any one point me to a plugin that can add a button to the Write Post page that when pressed inserts a portion of code into the post. I use a snippet of code – nothing even remotely fancy – to display my pictures in blog the same way, borders alignright etc.

I use notepad and copy and paste at the moment and it’s getting a bit tedius.

A button would be nice, several even better. Any ideas?