Hi Moshe;
I have great news for you ... I use:
1) EZTwain to scan the documents into my PB and Appeon applications.
http://www.dosadi.com/eztwainpowerbuilder.htm
2) Tesseract to OCR them (Free open source).
http://sourceforge.net/projects/tesseract-ocr/
3) And ImageMagicK to clean-up the images (Free open source).
http://www.imagemagick.org/script/index.php
Note: I think Bruce likes FreeImage - which also looks like a great product)
http://www.miqui.it/pbni_freeimage.htm
HTH
Regards ... Chris