File Formats Used
.rtf This is a Rich Text Format file. It is plain text with a few basic formatting commands. Any word processor on any platform (type of computer or type of software/operating system) can open these.
Word (.doc) This is a Word for Windows version 6 document. Most modern word processors should be able to view these. You can obtain a free viewer for Microsoft Word documents.
.html Hyper Text Markup Language is the format that web pages are written in. As such clicking on the html version will load up the 'file' within your browser just like any other web page or link.
.zip This is a compressed file format. This will usually contain all the above versions of the file in a 'squashed' format that takes up less space. To 'view' or 'extract' these you will need a program that can handle ZIP files. You can download a trial version of one such program, WinZip, or a free alternative, WinZip from Info-Zip.