my limitation is the space, so i searching for the best single slot card, i found ATI HD5770, but this is not available yet. Maybe on these days the stores will start to sell it. im not sure. I think is a good option to upgrade my card.
yesterday i put my x1950pro on my pc and was automaticly detected, after that i only installed the drivers and works fine, so im almost sure that my 8800 gt is dead, i will make a last test with another pc.
thank you for all.