what to do what to do?

hello all i am pretty new in the pc field and i need a question answered if possible. i am trying to upgrade my old pc and i was thinking of getting this bundle deal on ebay "BRAND NEW INTEL 3.0 GHZ P4 CPU, 800 MHZ BUS SPEED

RETAIL BOX PACKAGING
3 YRS DIRECT WARRANTY FROM INTEL
800 MHZ FRONT SIDE BUS
1MB L2 CACHE
.13 MICRON NORTHWOOD CORE
SOCKET 478 FORM FACTOR
HYPER-PIPELINED TECHNOLOGY
1MB-KB L2 ADVANCED TRANSFER CACHE

would this be a good pc bundle, i think the motherboard is elitegroup or ECS or something. i mainly want to do 3d garphic design. what should i do? should i try athalon or will pentium do the trick.