Lighttpd config help

[xodeus]

When I first installed lighttpd, I never thought that I was going to extend. So my wordpress-mu site has root in /var/www
Now I would like to host a forum (phpbb3) in a directory there
somewhere.
I've some rewrite rules for wordpress-mu that I would like to keep.
I hope that anyone can help me with this issue.
i would like this strucutre now
/var/www/bloggr - bloggr.dk >>with rewrite rules
/var/www/pitstop - pitstop.bloggr.dk
/var/www/test - test.bloggr.dk >>Just where I play

I've attatched those files in the zip:
/etc/lighttpd/lighttpd.conf
/etc/lighttpd/wpmu-rewrite.conf