How can I integrate my domain into my sub domain.

However I browse it must not show my subdomain path. But only the domain path.
While install my forum, I given the forum url as my domain. I can able to browse.
But I cant able to login. Shows 'url cannot be found' Now I change the forum url with
my sub domain. If it is the case then wat is the use of using our own domain ? or any
other alternate ?

Guys pls help me.

Nobody to help me...?

Yeah, it looks like the domain name is only there to forward you to the provided sub domain, IDK for sure tho...

But if we give the forum url as the domain name its working nice when we browse from outside.
The only thing can't login. Any suggestion anybody else ?