Essentially, you'll need to boot up from your Windows 7 DVD and see if your SCSI Drive is detected when attempting to install. If not, you will need the drivers for your SCSI Card so that your hard drive will be detected.
My Computer
At a glance
Windows 7 Ultimate x64 SP1Intel Core i3 530 2.93 Ghz Clarkdale4 GB OCZ DDR3 1600 (PC12800) Low Voltage Desk...Nvidia GeForce GTX 550 Ti with 1 GB of RAM
OS
Windows 7 Ultimate x64 SP1
CPU
Intel Core i3 530 2.93 Ghz Clarkdale
Motherboard
ASRock P55 PRO/USB3 LGA 1156
Memory
4 GB OCZ DDR3 1600 (PC12800) Low Voltage Desktop Memory
Graphics Card(s)
Nvidia GeForce GTX 550 Ti with 1 GB of RAM
Sound Card
Realtek HD ALC892
Monitor(s) Displays
20'' eMachines E202HDbmd Glare Panel Widescreen
Screen Resolution
1600 x 900
Hard Drives
Western Digital 1 TB Caviar Black Edition (7200 RPM) SATA
Hitachi Deskstar 500 GB (7200 RPM) SATA
Samsung SpinPoint 400 GB (7200 RPM) SATA
PSU
Rosewill Xtreme Series RX750-D-B ATX12V v2.2 & EPS12V (750W)