Your pc is lga771. This is xeon only territory, and old xeon at that (Core 2 Duo/Quad era, 5-6 years old). There are no i7s with a compatible socket.
There was a lga1366 dual processor board by EVGA called the SR2, I think. This processors for it were branded as i7 extremes but was actually a pair of high-end xeons.