AdminCP --> Forums & Moderators --> Forum Manager --> Edit the forum you want to show on separate page --> Posting Options --> Forum is Active (set to "No") --> Place a link somewhere to this forum.
If you want it to look like vb.org, set a category like the above and link to the category instead of an individual forum. This will show the category and the forums placed in it on the separate page.
On your site:
Set the Category "Domain Names For Sale" like the above directions and then place a link like:
http://www.trickfly.com/forumdisplay.php?&f=1 somewhere on your site or header.