Domain name and it's navigation links

I'm going to make another forum in forumotion and I have some questions.

I would like to buy a domain name here in forumotion like buying credits to purchase a domain name. If I purchase a credits to buy a domain name for my new forum can I have this kind of links like displayed in the address bar when I click there respective navigation buttons?

Ex.
www.mydomain.com/forum.htm
www.mydomain.com/portal.htm

Yes.

can it show these nva links without buying it from forum motion, if so how

If you're talking about forum.htm and etc, it's basically your subdomain without the extra long name.

Subdomain - www.example.forumotion.com/forum.htm

Domain name - www.www.example.com/forum.htm

Same page just without the 'forumotion' part .

I dont get what you mean