Re: SUSE10.2 debian3.1r4 FedoraCore6 SiI3114 NVRAID nForce SATA RAID
You would be better off posting this in your choice of distro's forum as this is more of a distro specific question. opensuse for example will support your striped raids out of the box.
Release notes from opensuse 10.2
"BIOS RAID Supported During Installation
BIOS RAID is now supported during installation. Activate it in the BIOS and run a default installation."
I have a very similar setup to you and verifies that it does indeed work fine.