sata drives are good enough to handle tha data needs in resolume. if you can, buy an raid controler, plug 4 sata hdd's and work as raid 5
to install the os and app I prefer sata system disk
here is a simple configuration for an highg performance but big system
2 x sata hdd (1 for os and 1 for swap)
4 x sata hdd connected to an extra raid control card and configured as raid level 5
system ram: if possible 2gb of. ddr2 533
such a system can handle, uncompressed video i/o without a doubt.
2 system disks because
nature of the windows requires a swap file and upon my own experiences and tests, if you use the swap file on the physical disk that u installed the os, performance reduces...
firewire is better against usb2.0 due it is nature...
need extra info,
just drop a note here regarding ur question...
hope that helps
bw.
t.