Suitable SATA controller card

I have a Asus motherboard with available PCI slots.  I have a 150GB WD Raptor drive on SATA port 0 that carries the operating system.  I have a hardware mirrored pair of 160 GB Seagate drives on SATA ports 1 and 2.  The RAID 1 pair are set up using the Intel Matrix Storage Manager and the 82801FR SATA RAID controller.  All drives are operating with no alerts in the device manager.

I would like to add an additional WD Raptor SATA drive to the system.

I need advice regarding the selection of a suitable SATA controller card to carry additional SATA drives.
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Isn't it that the MB has four sata connectors?
Why You insist on buying new controller?

But anyway, as long as You will not use it as server, You can buy any cheap pci or better pci-e x1 card. Just follow the rule, and don't connect more than 2 drives to one controller.

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I'm curious, why not plug the new SATA drive into the chipset?
Rikki27Author Commented:
I am aware that the MB has four SATA ports. I have plugged the extra SATA drive into the spare port (P3) however whilst the drive is recognised in BIOS and in the RAID setup (Ctrl-i) during boot it is not recognised by Windows ( not seen in device manager).  The spare drive works fine also as it was the boot drive and when connected to port 0 the system boots to Windows.  

My interpretation of the advice I have received recently from Experts is that I should only have the non-booting RAID mirror connected to the onboard SATA controller chipset, however the primary boot drive is also connected to P0 and it all appears to be working.  Should I move the non-RAID primary drive to a PCI SATA controlller also?

If I knew how previous questions are referenced then I would add a reference to previous discussions for your information to explain some of the past history in relation to this matter.

My only option would appear to be to add a SATA controller card to the MB to allow me to connect the additional SATA drive.  I do not sufficient techincal or theoretical knowledge to determine the solution to this problem.  I have read a great deal of the information on this site relating to RAID and SATA and also from other sources but the information to date has not given me a cause for this problem or an effective solution.

Current commentators excluded; I note that Experts sometimes offer solutions to problems without a statement as to the reason why it should or shouldn't be handled that way.  It would help greatly in overall understanding if solutions included " do it this way because ....................."

Any further advice is greatly appreciated.

Rikki27Author Commented:
Will follow up drive recognition in XP on another forum.  Thanks

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