Slight .htaccess confusion

[MetalMilitia]

Noob question I'm sure, hopefully someone can explain it and not just link to some complicated mumbo jumbo.

http://www.armageddononline.org is the homepage I use, it's joomla.

For years I have had the forums set as http://forums.armageddononline.org or alternatively http://www.armageddononline.org/forums/

Now when using those two URL's it jsut redirects me right to the homepage, unless I have http://www.armageddononline.org/forums/forum.php

I have the mod rewrite on, and working ; but I still don't understand what's redirecting forums.armageddononline.org and armageddononline.org/forums straight to the home page. If someone could specify exactly how that's setup, all i want is to go back to having it how I had it for years, with those pointing right to the from page of the forums.

I used the do not upload .htaccess file and whatnot, what am I overlooking that's messing me up?

Thanks,
Matt