I've heard rumors that 10.6 Snow Leopard for Mac will drop PPC support. I don't want to buy a new computer, and I want to take a leap into the coming technologies! I currently have a PPC G4 Mac. Please help!

That is impossible, Intel and PPC are completely incompatible physically. you may be able to get away with just getting a new motherboard and intel chip but that would be quite difficult and is not supported by Apple.