I just purchased a HP d145 and installed it onto my machintosh G3 minitower, upgraded to a G4 with lots of ram and a OrangeLink+ USB2/Firewire card. Using Mac OS9.2.2. Previously I used a microtek scanner on the usb port and was able to scan into all of my Adobe products (Acrobat, Photoshop, etc) but only one copy at a time. Twain acquire from within an application only happened once then the HP plug-in disappeared and was never found again. I wrote HP and they don't care about the problem. I wish that I had not relied on HP's repretation but had looked on this site first.