If you have Office XP and Office 2003 you can create Text Searchable Tiff images for Free. Microsoft's Document Imaging is a component of Microsoft's Office XP Suite that allows for the creation of Text Searchable Tiff images. Although it is included with Office XP and Office 2003 it does not automatically install as part of the basic installation. This is an important feature that many people are not aware of and it can be used with a copier that has a scan option.

http://www.edocfile.com/text_searchable_tiffs.htm