What u want is an ATA raid card. A company called Siig do one thats down to £30 here in the UK at pc world. I have no idea where in the world you are but im sure you could find one. See if you can get your money back on the scsi card and that will more than pay for one.
Sorry, ignore all that, i didnt look at the pic properly, u will definately need a scsi card. They can be expensive.