Rewriting exception for "log-in"

Dear friends,

I was “convert” my old page into wordpress.

Old url-s had .php on the and, and I was redirect this url-s on new, same url-s, but without php using:

RewriteEngine On

RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /([^\ ]+)\.php<br/>
RewriteRule ^/?(.*)\.php$ /$1 [L,R=301] </code>

Old url-s indexed by google now redirecting to new one withot problem, but when I’m trying to log-in into worpress panel located on domain/wp-login , “loop” is happend and no way to log in. Same thing happend when i’m trying to log-in into phpbb3 forum that is located domain/forum/.

Please,anyone can tell me is there any way to make exception for:
/forum/ucp?mode=login and
wp-login directories?

Thank you!!!