How can I scan several text pages and save them as one multipage TIFF file?

I am being thwarted in my drive to scan text documents into multipage TIFF or JPEG files. A vendor has required this without stating how we are to get there, and my scanner mocks my feeble attempts to make it comply. How can I accomplish this?
posted to Ask Metafilter by Midnight Creeper at 2:42 PM on April 9, 2007 (9 comments)