Well I'm no expert but for me, your drives aren't enough, 200Gig total?? I'd go for 500Gig!
You really need 4Gig RAM if you use Vue6 with Poser shader tree import.
The Pentium 4 is old hat now isn't it? I'm still using a P4 HT 3.4 GHz but I'll be hoping to move to  core 2 duo by the end of the year.

The current spec for my new one is: 
E6700 Core 2Duo Processor
8Gig RAM, [for Vue6Inf]
Nvidia FX5600 graphics [DX10 compliant].
1, possibly 2 500 Gig HD's

Injustice will be avenged.
Cofiwch Dryweryn.