hi, i accidentally bought an scsi hd instead of an ide... is there an adapter i can use to make this work? or just a scsi cord that i cud use, but i dont know where to plug it onto my motherboard, it only has outlets for ide
no it won't. SCSI hard drives are internal devices.
You need to plug your hard drive to an internal connector on the SCSI card. regular SCSI card don't have 80 pin connector. If you don't see any power connector *on your drive* then your drive is using the 80-pin connector and you will need an 80-68 pin converter to use it in your personal computer.
The converter will cost you some, the controller (the card) will cost also, and the SCSI cable... and time wasting on configurating these. I suggest you exchange the drive for an IDE drive.
Unless you're having an U320 SCSI drive, you won't notice remarkable performance improvement. Also, the U320 SCSI controllers does cost *a lot* it's not worth it to use on your personal computer.
At the price you've paid for the hard disk I would personally mark it down to experience and re-list it on ebay and get yourself and IDE drive as you're likely to pay at least as much again for a scsi card.
If you really want to get a scsii interface for it I would wait until the drive has arrived and check exactly what SCSII standard/version it uses then look for an interface that's compatible with the standard specified on the drive itself.
I can't personally say if that second link that you posted would work (or if cloudmaster's recommendation would work - though his suggestion would seem like a safer bet to me).
Sorry I can't be more help. Hope you get it worked out