I do not want to change my site url through out site

Hi,

I am new in ROR.

my current url is like:

http://rails-forum.com/profile.php?action=change_pass&id=41665&key=DIa6MR9n

but i want to show this url like:

http://rails-forum.com/

through out site even we click any link on the site.

Please help me. How can i do this in ROR.

Thanks

Amit Jain