zfs raid and/or hardware raid..

[B. Cook]

I have a dimension 9150 that I am going to put amd64 freebsd on to play 
with.

It has Intel ICH7 SATA300 on it, in the bios it says it can do raid.

I'm assuming that would be a hardware raid..

Would I be better off just using two disks and mirror them in software 
raid (zpool) or using the Intel hardware-ish raid and then zfs the raid?

box has 2G of ram, and a pair of 250G sata 300 drives.

clues appreciated.