So either this card is out of this world or the label that's on the card is a typo (should be gddr3).
One way to find out is a tool/software or a way to check whether it is gddr2 or 3... but how?
Well nwo that i think about it, I think when my friend got his 7600GT he got it with GDDR2, and he used PCI-Express, but that was over a year ago so I can't be to sure. if you want to know, use a tool called GPU-Z, there was a post here in the forums nto to long ago. I'll do a google search on it for you.http://www.techpowerup.com/gpuz/
EDIT2: I found your GDDR2 7600Gt PCI-Express card. Here you go...http://www.directron.com/v7602gs21.html
EDIT3: NVM, that was a GS, but it seems to me only the 7600GS can be in GDDR2 and PCI-Express interface, n ot the GT.