I have an Imac G5, MAC OSX 10.6.4 I need to install an Epson Perfection 1670 Scanner, I followed instructions in software, but when I open photoshop does NOT shows in the TWAIN menu, instead appears a different Scanner. The Desktop displays the Epson panel to initiate the software, but does not shows the scanner in photoshop. How can I deactivate the previous scanner and install the new scanner in the TWAIN menu? (please send me advise to my E-mail: franraymundo@hotmail.com