BSD- downloaded Raid Driver won't run

After a bluescreen, per the MS directive to resolve the problem, a missing driver for the Intel Matrix Storage Manager (iaStopr.sys), I downloaded the recommended driver (ATA89ENU.EXE). When I try to run the download, I get the error message

No further indication of what is lacking.

My computer:
Dell Dimension 8400 series
MS Windows XP Professional SP2
Intel Pentium 4 Processor 540
1GB DDRW SDRAM at 533 MHz
128MB PCI Express s16 ATI Radeon X300 SE
160GB Serial ATA Hardrive (137.4GB free space)

I am able to use the computer but the blue screen comes back periodically.

Any thoughts would be appreciated.

Thanks,

kellyplus