You can easily create a custom spreadsheet that serve as an invoice or appraisal sheet. Plus you can put all your contact information in the header. Once you create the spreadsheet it is as easy as clicking "save as" to change the format of the spreadsheet for the web or printing.
If all you have is microsoft works you will like open office much better. Open Office is a dynamic office suite that allows you to save documents in any format including .pdf, .html or a document that can be opened with microsoft office.