Why is a SCSI disk not showing up?

Solution 1:

It looks to me like the driver should be available in newer kernels (under the name dc395x), but might not be activated/compiled by default. Does a sudo modprobe dc395x help? According to this, it is the right module for your card.

Solution 2:

There are a couple options you can try.

1) Try obtaining a version of the kernel that you can patch. (Set up dual boot at you say Seth suggested in the comments) You can find versions of the kernel in the range your patch specifies here

2) Migrate your Windows installation to Virtual box

How to do either of these approaches is fully documented elsewhere and either approach triggers a different question which has likely been asked and answered long ago. I hesitate to create more duplication.