Information about adding video card?

I have compaq presario SR1530il desktop pc.Can I add 512MB video card in the PCI slot? How can I decrease the temperature inside the cpu?|||No on the ; unless it is a pentium computer you can . And add a fan.|||for Lower heat pick a can of compressed air and open up your computer and blow away all the dust Although PCI cards wont really give you good performance but ti will inscrease it|||I really doubt there are any video cards out anymore that use PCI that have 512 MB. If you're talking about PCI-E, then open the computer up and see if you have a PCI-E slot. And decreasing the temperature, get a better CPU heatsink if you want it to run cooler.