You have a lot more guts than me. I would have to be extremely confident in my soldering abilities to even consider doing something like that. What exactly is happening when you boot up with the card? Do you get the post screen on boot or is it just completely dead? Is the fan coming on the card at all?

Also why did you remove the SMD capacitors from your VGA card? Were you trying to place them on the 7800? I am a little bit confused. My understanding, though, is that you have two video cards that are basically not working right now. Is this correct?