When you scan the document, save it as a pdf. file. To edit it, go to www.primopdf.com and download it. It is a pdf file editor. Its free and it will allow you to edit the scanned document.
hope this helps.
Just go to www.onlinedocumentconversion.com register and buy some credits upload and convert your file easily. If you have any difficulty, contact their staff immediately. But I think you don’t have to contact if your scanned quality is good.