try installing using the ar-m205 drivers that come with vista. just go to add printer and scroll down to sharp ar-m205 .......
You can download drivers for your printer from the following link---
Sharp AM 900 Drivers
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want to find your driver for sharp ar-5316 for windows vista,you just go to this website http://support.sharp.net.au/drivers/ and u good to go....:)
try the driver for AR123E at
Supported Models AR-123E, AL1045, AL1216, AL1225, AL1255, AL1530CS, AL1540CS, AL1456
Unfortunately, there is no driver available for the Vista64 bit yet..See here: