Ok I'm a Dummy

[anthroa]

I have been looking around and reading but still can't find a clear explanation (to me anyways) on how to do a url rewrite for my card site so maybe someone could help here or point in the right direction at least

my existing urls are

http://www.mysites.com/ecards/gbrowse.php?cat_id=20 and http://www.mysites.com/ecards/create.php?card_id=21

so that it would appear as


http://www.mysites.com/ecards/category20.shtml and
http://www.mysites.com/ecards/card21.shtml

any help much appreciated - A