I successfully installed Win7 Ultimate 64 bit on a new drive which is in my workhorse PC. I have only a couple of open driver issues. One is for my SCSI adapter (which I still need). I went to the Symbios site and was not surprised to see that there are no new drivers for this device. They have a Win XP ASPI layer package, and drivers for NT 4.0 which have the most recent date (which is still years ago). Anybody have any guidance on which driver I should use for a 53C810?