mod_rewrite exception question

[kid_drew]

I am rewriting all urls of the format www.xxxxxx.com/yyyyyy to /index.php?p=yyyyyy, but I have phpbb installed in the /board directory and I would like www.xxxxxx.com/board to be the one exception to the above rewrite rule.  How do I do that?  I've tried:

RewriteRule ^([A-Za-z0-9]+)$ index.php?p=$1

RewriteRule ^board/?$ /board

And that doesn't work.  I thought the second line would trump the first, but it doesn't appear to.  Any help?

[wildteen88]

Just turn of mod_rewrite in the board directory by adding a .htaccess file in board/ with the following
[code]rewriteEngine Off[/code]