1st bad idea:
I want to recommision an GTS 8800 for mining
An 8800 gts gets a 16.8mhs
Source: https://en.bitcoin.it/wiki/Mining_hardware_comparison2nd: Any cable will work and you can both save alot of money and help out the bitcoin community by buying from one of the reputable dealers like CablesAreUs or several others.
So, just leave the card alone, or sell it, you wont get anything out of it, you power will cost more than what you earn, and that would be pennies a year.