Will this scanner work on Vista or must I use in on a computer that has XP? How do I get it to work with Vista? Would it be easier if I got Windows 7?

You have to replace the original Konica Minolta driver with the custom one I have created below. Here are the detailed steps.

1) Install the Konica Minolta XP software in Vista/Win7.
2) Plug in your DImage Scanner into a USB port and turn it on with the door closed. It will detect and install the original Konica Minolta Driver.
3) Create an empty folder on you harddrive (for instance go to my computer, double click on the c: drive, then right click and create a new folder named newminolta).
4) Open windows notepad and copy the following into it:
; sonyscanners.inf -- Sony (Konica Minolta) Film Drivers
;
;
; Beta driver for Windows Vista and Windows 7 operating
; systems for all known Sony film scanners.
[Version]
Signature="$CHICAGO$"
Class=Image
ClassGUID={6bdd1fc6-810f-11d0-bec7-08002be2092f}
Provider=%Provider%
DriverVer=2/19/2011,3.0
[Manufacturer]
%Mfg%=Models,ntamd64
[Models]
; USB and SCSI scanners
"Minolta Scan Dual II" = USBScanner,USBVid_0638&Pid_026a
"Minolta Scan Dual III" = USBScanner,USBVid_0686&Pid_400d
"Minolta Scan Dual IV" = USBScanner,USBVid_132b&Pid_000a
"Minolta Scan Elite 5400 2" = USBScanner,USBVid_132b&Pid_0012
"Minolta Scan Elite 5400" = USBScanner,USBVid_0686&Pid_400e
"Minolta Scan Elite II" = USBScanner,USBVid_0686&Pid_4004
"Minolta SC-110" = USBScanner,USBVid_0638&Pid_0a15
"Minolta SC-215" = USBScanner,USBVid_0638&Pid_0a16
"Minolta QuickScan 35" = SCSIScanner,SCSIScannerMINOLTA_#2880___________
"Minolta Scan Dual" = SCSIScanner,SCSIScannerMINOLTA_#2882___________
"Minolta Scan Multi" = SCSIScanner,SCSIScannerMINOLTA_#2883___________
"Minolta Scan Speed" = SCSIScanner,SCSIScannerMINOLTA_#2884___________
"Minolta Scan Elite" = SCSIScanner,SCSIScannerMINOLTA_#2885___________
"Minolta Scan Elite 5400 Firewire" = SBP2Scanner,SBP2MINOLTA&DS_Elite5400&CmdSetId104d8
[Models.ntamd64]
; USB and SCSI scanners
"Minolta Scan Dual II" = USBScanner,USBVid_0638&Pid_026a
"Minolta Scan Dual III" = USBScanner,USBVid_0686&Pid_400d
"Minolta Scan Dual IV" = USBScanner,USBVid_132b&Pid_000a
"Minolta Scan Elite 5400 2" = USBScanner,USBVid_132b&Pid_0012
"Minolta Scan Elite 5400" = USBScanner,USBVid_0686&Pid_400e
"Minolta Scan Elite II" = USBScanner,USBVid_0686&Pid_4004
"Minolta SC-110" = USBScanner,USBVid_0638&Pid_0a15
"Minolta SC-215" = USBScanner,USBVid_0638&Pid_0a16
"Minolta QuickScan 35" = SCSIScanner,SCSIScannerMINOLTA_#2880___________
"Minolta Scan Dual" = SCSIScanner,SCSIScannerMINOLTA_#2882___________
"Minolta Scan Multi" = SCSIScanner,SCSIScannerMINOLTA_#2883___________
"Minolta Scan Speed" = SCSIScanner,SCSIScannerMINOLTA_#2884___________
"Minolta Scan Elite" = SCSIScanner,SCSIScannerMINOLTA_#2885___________
"Minolta Scan Elite 5400 Firewire" = SBP2Scanner,SBP2MINOLTA&DS_Elite5400&CmdSetId104d8
[USBScanner]
Include=sti.inf
Needs=STI.USBSection
SubClass=StillImage
DeviceType=1
DeviceSubType=1
Capabilities=0
[USBScanner.Services]
Include=sti.inf
Needs=STI.USBSection.Services
[SCSIScanner]
Include=sti.inf
Needs=STI.SCSISection
SubClass=StillImage
DeviceType=1
DeviceSubType=1
Capabilities=0
[SCSIScanner.Services]
Include=sti.inf
Needs=STI.SCSISection.Services
[SBP2Scanner]
Include=sti.inf
Needs=STI.SBP2Section
SubClass=StillImage
DeviceType=1
DeviceSubType=2
Capabilities=0
[SBP2Scanner.Services]
Include=sti.inf
Needs=STI.SBP2Section.Services
[Strings]
Provider="Sony (Konica Minolta)"
Mfg="Sony (Konica Minolta)"

5. Now save you new notepad file in the directory you created as sonyscanners.inf NOT as sonyscanners.inf.txt or sonyscanners.txt (i.e. c: ewminoltasonyscanners.inf)
6. Go to system control panel (may have to change control panel to classic view to see system).
7. Select Device Manager
8. Select Imaging Devices
9. Right click on Minolta XXXX (depending on model) and click on driver tab. Select Update Driver.
10. Select Browse my computer for driver software.
11. Select Let me pick from a list of device drivers on my computer.
12. Select Have Disk
13. Browse to c: ewminoltasonyscanners.inf and click OK
14. Click Next. Windows should now say it updated driver.
15. Run Dimage software with door closed. Wait for it to initialize and green light stops blinking.
16. Open door and insert film holder and start scanning.
17. If you are trying to use a Minolta 5400 with firewire in Windows 7, you have to change your 1394 driver to the legacy windows 1394 driver in order for the scanner to detect. Google for instructions as it's too detailed to add in here.
18. The above driver should relink virtually all known Minolta scanners (USB/SCSI/Firewire) to the Windows TWAIN driver so it will work with the legacy Minolta software.