Trouble installing ecs nvidia 8800gt

Hey guys, recently got a 8800gt with a heatsink and am having trouble installing it being this my first time installing a new gfx card. I put the card in the black pci express slot and turn my computer on and put in the disc for drivers and it says It cannot find the card. More specifically on what I am doing, is just putting the card in the slot where i think im supposed to put it in, not attaching any cables to it or anything. The box came with maybe 2 or 3 cables and one I know if im supposed to be using them or not.

This is a pic of my motherboard

2 gig ram
amd athlon 64 processor 3700+
...
i think my psu is listed on here
http://h10025.www1.hp.com/ewfrf/wc [...] c=en&cc=us

would that be the pcie power connector?
http://img293.imageshack.us/img293/2291/1000434gz0.jpg

bf2gameguy is referring to the ATI logo on the pic of your motherboard, namely for the chipset. If you have the drivers for the motherboard from their website dont worry about it. BTW BF@guy A64 is not socket A, either 754 or 939 and since the ram slots look like dual channel, it has to be 939. 8800gt may bottleneck the cpu a little but still a worthwhile endeavor.

make sure you have a power supply from a reputable brand and 450 watt minimum (26a on 12v rail recommended by manufacturer)

So If I have a previous ati chipset i can sitll run this nvidia 8800gt?

??????

Not exactly sure what the power supply looks like and where it's located. There are a ton of jacks scatterred around the comp that look like the cord will fit into, but not sure which to use.

Yeah, Im debating over returning this card and pick up an ATI since people are telling me that I had an ATI chipset so I shouldnt be using a Nvidia graphics card, is that true? Also have a picture of the mobo layout and I think the power supply is shown there



So If anyone can help tell me which jack I should use...

That is how the PCIe power connector looks like. You will need to plug this to your graphics card. (Note: PCIe connector has 6-pins, not 4.)

Your video card came with an adapter which has a 6-pin PCIe power connector that attaches to your video card. On the other end of the adapter are 2 4-pin molex connectors. Find the cables (wires) that are running from your power supply. You should be able to find 2 seperate wires that have the 4-pin socket that will plug into the 2 4-pin sockets that was supplied with your video card. Then plug the 6 pin into your video card.
I think this is your video card. http://www.newegg.com/Product/Show [...] aterMark=1
Hopefully this will work for you.