stuff.tolranet.co.uk/wpw/htaccess/file_name.html when you access that it will rewrite to file-name.html
Where did you put the .htaccess file in the forum folder or in the folder above it?
If you put it in the foum folder than change it to be:
Code:
RewriteEngine on
RewriteRule ^(.*_.*)$ moved.php?u=$1