After some quick googling your MB and AM3 X6 should work fine.
If you take a look at
http://media.ldlc.com/ld/products/00...00767179_2.jpg
It has a 4pin power connection on the right side of the picture it's blue.
From what I'm reading if you do have the 4pin and 24pin connected it's probably something else that's wrong. I'm sure someone here can get ya fixed up though.
You can usually find problems like yours on other forums http://vip.asus.com/forum/view.aspx?...Language=en-us