Those temps are a bit stupid being put together then isn't it?
Of course playing games it would have heated up to around that temperature, most video cards do. With no gaming, it wouldn't be that warm at all which would signify the large drop..
As for that card, I'm sure that would be very expensive
Nope, you can get the Geforce 6600GT with AGP. Its ATI that don't have many mid range cards, and all the high powered ones are in PCI-e.
Though you can now get a PCI-e to AGP switcher.
I hope this helps