How to replicate forcetype?

[eluser]chobo[/eluser]
I have some web pages that I am trying to put into codeigniter, but I'm not sure how to do it. My old pages used apache force type, so one page would check different urls and load different results based on those urls. I'm trying to do something similar in codeigniter, but if you add to the url it treats that as a controller or part of it and gives you an error. Is there anyway around this behaviour? Thanks in advance.