[Haakon]

RewriteEngine On
RewriteRule ^musicforum([0-9]+)\.html$ forumdisplay.php?f=$1 [L]
RewriteRule ^musicforum([0-9]+)-([0-9]+)\.html$ forumdisplay.php?f=$1&page=$2&sort=lastpost&order= &pp=20&daysprune=45 [L]
RewriteRule ^musicthread([0-9]+)\.html$ showthread.php?t=$1 [L]
RewriteRule ^musicthread([0-9]+)-([0-9]+)\.html$ showthread.php?t=$1&page=$2&pp=10 [L]

I`ve got these working (exchange musicforum and musicthread with your topics of course).

And basically just try the find the corresponding things in vb3 from what is described in lierduh`s post :
https://vborg.vbsupport.ru/showpost....&postcount=223
Try it, and if something specific comes up, I will try to help.

PS. Try one rule at a time.