easy urls

[waza]

Hey, I have converted my vbulletin into a big profile site (with a lot of hacks and own mods.) But i want that my members have easy urls :

-http://www.domain.com/forum/member.php?u=1 <- now

I want this to look like the following:

-http://www.domain.com/membername/ <- profile
-http://www.domain.com/membername/fotos/ <-go to their album in my vbgallery
-http://www.domain.com/membername/blog/ <-go to their journal in vbjournal.

You see what i mean?

I already have the following done with htacces and so:
-http://www.domain.com/forum/membername
but if i add a '/' at the end, it doesn't work anymore and it is still to long (with the /forum/)
Plus i can't make sub-maps like forums, ...