just bought a new canon canoscan lide100 and I can't get the damn PC to recognize it. I've installed the driver, re-installed my USB ports drivers, but it still comes up that it's an unkown device.... I read in the manual that ""When using the NTFS file system, the TWAIN data source may not be invoked. This is because the TWAIN module cannot be written to the winnt directory for security reasons. Contact the computer's administrator for help." PC is set up as NTFS.... but all our other scanners worked just fine..... any ideas on how to get this thing running?