2nd SATA Drive

[H0885]

Hey all
I have a recently new build of shiny new things but after something silly, its all gone to pot.

I have an ASUS MV2 Mobo with 2 Western(I think) 160gb SATA HDDs set to RAID 0. (there is other stuff but I don't think they're of any significance)

I myself struggled to sort it myself so a few associates of mine done it for me.
We had quite a bit of hassle setting up the RAID because the BIOS wouldn't recognize the 2nd Drive after the stripe was set up, thus making boot impossible.

After about 2 hours of playing around it got sorted through some BIOs settings - i believe.

Unfortunately my brothers computer packed up and i unplugged my drives to use my SATA cables in his computer to check what was wrong. After sorting that I put my computer back together and booted up... to see my desktop from about 6 months ago. (The IDE from my old system was plugged in due to some files i had on there previously, didn't get round to unplugging it.)

I uplugged the IDE and am now faced with the problem of:
No second SATA HDD, thus no bootable RAID Array.

I am unable to get hold of the associates that helped as they are on holiday, and I am hoping to be able to use my computer sooner rather than later.

Bit of a long winded question i know, but any ideas what settings need to be changed to have the 2nd SATA HDD recognized again?

Thanks a lot :