I don't know if it's just my comp, but i wrote a site and tried to get it so my domain went there, but all it says is it's not available, but if I go to a longer way it'll let me go there. That 1 is bttm.bravehost.com/bnhometest.html also I can't change the name of my forum, please someone help me
You didn't actually ask that the domain be directed to bttm.bravehost.com/bnhometest.html, did you?
You asked for bttm.bravehost.com? In other words bttm.bravehost.com/index.html
Rename the file. I know, I know, it isn't finished yet. But the chances that you will be swamped with visitors before you are finished and start promoting the site aren't big.