It is possible to use many of the features in Microsoft Word to create professional looking sales letters. You can re-create your headed paper by adding images of your company logo, scan in your signature, use colour to create attention grabbing headlines and spread your copy over up to 5 pages.
You even have the choice of using double sided printing, to create a document of up to 10 sides of A4. It’s possible to create a company fact sheet, mini brochure, or flyer using Word and attach it to the end of your letter as an enclosure.