Scanner: UMAX

Background:
I just purchased a new computer, XP-Home, I had been using
98SE for past 5years. I have a UMAX Astra 1220U scanner.
I have just purchased new software from UMAX for my
scanner, went from V-2.1 to V-3.5. This did not resolve
my problem.

Problem:
When I click to open my Vista Scan, I get the following
message:
Error Message
Scanner Access Fail
Solution:
Can not find UMAX scanner, Please check the following
items:
1)The interface card is not installed properly.
2)The interface card's address conflicts with others.
3)the scanner is not power on and ready.
4)The SCSI cable is not firmly connected from card to the
scanner.
5)Your scanner is not power on before your system start.

I have installed, unistalled, and reinstalled my scanner 3
or 4 times. All cables are connected properly.
Now I have also gone: My computer; right click,
properties; hardware, devise manager, and disabled "this"
device drive, that did not work either.

Problem:
Can not use the Vista Scan program to scan, which has some
very good features that I really like.
I can however, go: My computer; click on the icon for
UMAX, Astra 1220u, and use what appears to be a scan
wizard in the XP system, which I am not crazy about.

Question:
Is there some way to make the system recognize my
scanner/software/drive so I can use that?

Any and all help appreciated.
Thank you
Bobbi