just wandering...sometimes i see web pages that have the adress such as this: www.blahblah.com/?page=hello

how are they getting the /?page=hello without having a dynamic page written before it, example /index.cfm?page=hello?

i am just curious because currently my website first has a group of pages (home, links, products, contact) etc and then the argument p is the name of the CFM file that will be included on the page..
example- http://www.aforattitude.com/products...einaction_book (and in my script, it adds .cfm to the 'attitudeinaction_book' and includes this in the products.cfm page.

basically the reason i am asking this is because ive been told to clean this up, as the person i do this website for believes this is too messy (although they wanted it this way in the first place) and want it to just be like http://www.aforattitude.com/attitudeinaction_book.