[DuoList] Duodock upgrade questions

[Alex Santos 100MB Neostrada Mail]

I have a duodock and I would like to get an internal hard disk power 
cable. It looks like the internal power cable has what appears to be an 
unusual connector to the motherboard. Also, I am interested in the 
specs concerning the 512kb VRAM chip. I don't have one and am wondering 
if I can get one but where can I get specs, maybe I can find a non 
apple one that will work.

Your help would be really appreciated.

Alex