SCSI Driver Installed? (Was Iomega Zip 100)

[Dennis Webb <webbd cais com>]

I'm still trying to get my Iomega Zip 100 to work, as described in my
previous post.

How can I tell whether I actually have SCSI support for aha152x
installed?  Dmesg always says no SCSI hosts found.

The Iomega website has a HOW-TO for installing the Zip 100 on Linux:
    The first thing it tells you to do (after installing the hardware)
is to
    type: aha152x.o at the # prompt.  All that gets me is a message that

    aha152x.o isn't a recognized command.

    Next it says to install the driver module by typing:
    "insmod /lib/modules/2.2.16-22/scsi/aha152x.o".  When I do that, I
    get no error messages, so shoud I assume that the module got loaded?

    Next, I add the following line to fstab:
    "/dev/sda4 /mnt/zip100.0 vfat noauto,user 0 0"

    Next, I create a directory that will be the mount point:
    "mkdir /mnt/zip100.0"

    Finally, I try to mount the drive with:
    "mount -t vfat /dev/sda4 /mnt/zip100.0" and get a message that tells

    me that it cannot recognize /dev/sda4 as a block device.

Why is the Zip drive designaged "sda4" in all the document examples I've
been able to find?  Does the "4" mean that the Zip drive is the 5th
device (starting at 0) on the SCSI card?

I am wondering whether I don't have support installed for the aha152x
card.  How can I tell?  If support for it isn't installed, do I have to
run something like menuconfig and rebuild the kernel?