Apache rewrite rule regex -

i'm trying write rewrite rule redirect files in new webhelp system (it's stand alone website). have 2 things try take account - want redirect files in http://www.mydomain.com/webhelp folder. need change .html in end .htm... manage find each rule matching http://www.mydomain.com/webhelp, when try rewrite cond breaks...

basically, http://www.mydomain.com/webhelp/hello.html http://www.mydomain.com/webhelp/hello.htm without changing http://www.mydomain.com/index.html

would appreciate help. thanks!

if put following in .htaccess file in webhelp folder, should achieve you're looking for:

rewriteengine on  rewritebase /webhelp/ rewriterule ^(.*).html$ $1.htm [r=301,l]