I have switched from UBB to vBulletin. What do I need to place in the .htaccess file to redirect all traffic from ultimatebb.cgi to my vBulletin site?

thanks

http://httpd.apache.org/docs/misc/rewriteguide.html
http://httpd.apache.org/docs/misc/howto.html

Alternatively you could change which file the server will return when the user goes to the directory:
http://httpd.apache.org/docs-2.0/mod/mod_dir.html#directoryindex

I'm guessing you don't have both boards in the same directory however...

No, they are in different directories.

Use the top two links then, info was for either case.