Yea... the only thing on there that is even decent for gaming is the processor and that's just because you can overclock it to 3.2Ghz, provided you have an aftermarket fan.
Short answer, no. It will not help your gaming
Long answer, you need to tell us what you have now and what you want to be able to play. Your budget is needed, too. Those parts are just crap, sorry. For instance that 80GB HDD is $35 and the 250GB is $48. A little money can go a LONG way.
Edit: Shouldn't this be in the Homebuilt section?