Your point is, rcrevolution?
Young Teck 06, cutting corners too far in relation to a processor isn't really a good idea for a Games system. A games system is a high performance system, or should be. You shouldn't plan on the need to upgrade a processor later on, because realistically technology changes too fast, a processor upgrade doesn't really give much benefit to Games performance, and by the time the next upgrade is needed almost everybody will need to upgrade their motherboard as well. So plan your system around a decent motherboard and processor from the start!
At present, for those people who need to be conscious of cost, there are two choices available which would make the basis of a good games system
AMD Athlon64 3000+ (or 3200+ is better if the budget allows) for socket 754 motherboards.
The Socket 754 standard is being phased out for future processors, but for now it's the affordable best performance platform. The processor should be coupled with a motherboard which uses the NVidia NForce3 250 chipset. This is the highest performing 'budget-level' option currently available for a games system.
Intel Pentium 4 3.0 GHz 'Northwood' for Socket 478 motherboards.
Not quite as good as the Athlon64 but still a very good performance processor/motherboard combination when coupled with an Intel i865PE or i875P chipset. Do NOT purchase an Intel brand motherboard, as it will have the performance features disabled. Third party motherboards using the chipset are a must, and ABit currently offers the best performing alternatives.
Build your system around either of those options, and install a high quality display card in it, and you'll have a gaming system which would perform well for you for a long time to come