[ubuntu] How do I get Ubuntu to read an existing NTFS partition on a fake RAID?

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http://ubuntuforums.org – I have a motherboard with an Intel ICH9R RAID chip. I have an existing RAID 5 setup over three disks which is NTFS formatted. I'm dual booting and I'd like to be able to access the RAID device in both Linux and Windows (and possibly OSX86, if I can ever get the darn thing to work). The problem is, Linux sees the RAID volume as three separate hard disks, rather than as a single RAID 5 device. All of the information I have found so far relates to setting up Ubuntu to boot off the RAID volume, which is not something I need. I just need to be able to access the data from both operating systems. (Hardware)