htaccess - rewrite .shtml and .html as . php

[B2H]

I'm pretty green with mod_rewrite. I've got the first line of this working like a champ, but the second part refuses to cooperate\[code\]RewriteRule ^(.*).html$ $1.phpRewriteRule ^(.*).shtml$ $1.php [R=301,L]\[/code\]The \[code\].shtml\[/code\] part fails wonderfully and 404s - without my custom 404 page. Should this be combined in to one rule? Should I quit my job and let them hire a monkey to replace me? has anyone got a solution for this?Thanks!