Ok now... I have the PSU.
I have some good news and bad news.
The good news is that it's working fine.
The bad news is the PSU didn't have 6-pin as shown on the website. Tho it's still the SAME PSU.
Here's another weird thing. I didn't have to pull out any wires from my GPU... NOTHING at all.
Oh and another thing... I smell something burning :P
just kidding
I hope there's a cable coming with the HD 4850 that converts 2x 4-pin molexes into 1x 6-pin. Getting the card in a few weeks.
Thx for the help. Shall i mark this Solved?