Found drivers on another forum
and bam. I guess my old scsi cards 29160 / 39160 and the few 15k 74 gig cheetahs still have a useful life. You dont know how happy this makes me. Windows 7 will be purchased upon release.
http://www.adaptec.com/en-us/support/scsi/u160/asc-19160/ (all windows drivers)
Ultra160 64-bit Driver v7.5.645.100 for Windows 7 & 2008R2 For Ultra 160 Cards in 64-bit Windows 7 and 2008R2 direct link
So, eventually, the 32 bit version did find working drivers. Hope the same can be said for the 64 bit version.
I was able to install 32bit 29160n driver for windows 7 x86 but unable to locate a 64bit driver for win 7 64bit.This did not work for me. I have tried several drivers from the Adaptec site, as well as the one I am currently using for win2k3. None of the drivers work when booting from the DVD. I tried to install it from within win2k3, one of the Adaptec drivers did allow 7 to see my SCSI C: drive, but the installation failed right at the end. The machine hung at 'completing setup'. I waited 1/2 hour or so and rebooted it, and the install rolled back. I am unable to install Win7.
32bit 29160n drivers was obtained from adaptec site using win 2000 driver. Try it...