Hi everyone. Today I am just trying to understand my scanner software a little better. I have a Canoscan LIDE 90 usb scanner, using Cannon software MP Navigator EX1.0, running on a windows 2000 sp4 machine. When I scan an item using the color mode setting in the software, I have the ability to set my format to jpeg, tiff, bmp, or pdf, but as soon as I set the softwares color mode setting to scan using the black and white setting, I loose the ability to format in jpeg, jpeg just disappears from the drop down format type box. I have figured out that all I need to do is to scan everything black and white/color using the color setting, but was curious as to why just a switch in the color mode from color to black and white looses the ability to save in jpeg.