Unfortunately you may have to let him down gently - not all PC hardware is suitable for imaging purposes as the amount of data to be processed and displayed is high. The next problem you will meet is customer preconceptions. Most press coverage on the subject of imaging concentrates on the high volume and mature markets of desktop publishing related imaging. This requires the use of similar technology to document imaging, but the trade-offs are completely different. He has read about OCR, line-art scanning and numbers of shades of colors scanned.
Image enabling suggests that images are going to be available at the users desktop.
This means a network must be installed. You scan the paper, look at the image for a good scan, and enter the index fields. The system keeps its own little database and stores the images and indexes on optical disk - sometimes they keep the indexing database on magnetic disk as well to facilitate speed of access. In some cases this is the easiest situation as we did not have to throw away anything - unsuitable PC's were sent to subsidiary branches. The VAR who had created the original accounting system had no knowledge of imaging, but the customer was suffering from misfiling, and his customer service suffered because they could not access documents fast enough.