is there any way to make pretty links?

My links include .htm at the mo and i have this code to change them:

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}\.htm -f
RewriteRule ^(.*)$ $1.htm

but i have done everything needed and it doesnt work. i like how simple it is to upload from xara and can't be bothered to have to go down the filezilla route to just get rid of .htm

but is there any trick i don't know about?

im using MX premium.