what ram do i need for this motherboard

i bought this motherboard its a G43t-M made by ECS Link in the description on the website i bought it, it says it takes 4×240pin of Dual Channel, DDR2 800 up to 8gb, well i bought 8gb and put it in but it doesnt start it only starts if i have just 2 chips in so its at 4 gb, i took a look at the book and it says

* You can only insert two single bank memory modules to each channel when using one channel with two dimms, since G43 only supports two dimms with Dual-channel.

what the heck does that mean? what ram do i need for this thing to have 8gb? anyone know?
heres scans from the manual
http://img.photobucket.com/albums/v99/billman424/combo.png
http://img.photobucket.com/albums/v99/billman424/qvl.png

thanks

ok it looks as though i need 4x2gb sticks of single sided ram but as far as i can tell no one actually makes this.

It clearly says: 4 times 2GB of DDR2 800 (PC2 6400) sticks equals a total of 8GB possible installed.

As for finding the correct RAM, it's simpler to use a memory configurator, such as: http://www.crucial.com/

http://www.crucial.com/store/listparts.asp...-M%20%28V1.0%29

Louis