3.33GHz Intel Core 2 Duo or 2.66GHz Quad-Core Intel Core i5?

Sorry, but there's no way to fool the games as your system must accurately ID the processor at the BIOS / UEFI level... the only thing you can really fudge is the processor speed. Processing cores cannot be fudged since that's something Windows compares for it's authorization fingerprint. The only thing that can cause a processor to report more "logical processors" than cores is if your processor supports hyper-threading, which all that does is help prepare the next piece of data for each core while it's working on the current piece of data.

When it comes to gaming, a graphics card (aka GPU) becomes important as well since it has to handle the 3D graphics for the game.