I am looking to make a special adapter.  Molex to Single Pin DC.
This is for my Voodoo 5 6000.

I am using a Molex to P4 motherboard connector, lopping off the P4 connector and then soldering a single pin DC connector to replace it.

So, at this point, I have the correct connections to get power, 12V, but what about the AMPS???  I don't really understand enough about electrical to figure this part out.

I am using an ANTEC NEO 550W modular PSU.  It has three 12V+ rails.  Each rail supplies MIN 1A and a MAX 20A. 

http://www.bjorn3d.com/read.php?cID=939&pageID=2409

My item consumes a max 4.6A.  Do I need to buy something to ensure the card doesn't get too many or too little amps OR does the card draw the amount of AMPS it needs and I should not worry about this issue.

thanks!

Ok, that's fantastic!  That's what I was hoping for. 

Thanks!