Inline Frame Help

Hi guys
I am trying to use my phpbb forum on my website via Inline frame and having a lil problem. It is taking/redirecting users to default phpbb page after they log in.
Here take a look http://www.shargo.uni.cc/forums.htm and hit login. It will take you back to default phpbb page. I want to use it with inline frame to make it look like if it is a part of my html page so i dont want it to leave the page.

Any help?

never mind just had to set my phpbb files action to _self