Hey Guys... I've been busy with a new girlfriend, but here's what I've found out on this situation.
First of all, it's not the script. 

 HOWEVER, you do have a few files in the wrong place.
I went to 
www.xgaeda.net (VERY nice design by the way).  I tried to find the signin page, and that took me a bit.
Sign in is at 
www.xgaeda.net/myred/signup.php and I registered an account.  But when I typed in Bizzar.xgaeda.net, I got a 404 error.
What should happen is, when DNS is correctly set up, all domains should point to the one index.php.  Seems like either the settings are incorrect somewhere.
Ok... rename your main page on the root of your domain to main.htm.  Currently, it's listed as index.html.  Now, put the index.php in that root folder.  Go into the code of index.php, and change a couple settings.  make sure it's pointing to the correct location for the script and database.  That should fix the redirection.  You should, like mercator said, check and make sure your DNS is wildcarded.
*.xqaeda.net         IN      A    <Your IP Address>
or
*.xqaeda.net         IN      CNAME    www
I hope this makes sense.