Can I view a document in SharePoint on a computer not running Word, Excel or Powerpoint?
 
Yes, included with SharePoint Services is the ability to connect to an HTML Viewer server. The HTML Viewer server provides support for users who want to view the content of files on the SharePoint site but do not have Microsoft Word, Microsoft Excel, or Microsoft PowerPoint from Microsoft Office 97 (or a later release of Office) installed on their local computers. Even users who have only a Web browser (Microsoft Internet Explorer or Netscape Navigator) can view content by having the native Office file format converted to HTML on the fly.
Note  By default, the HTML Viewer service supports only the following document types: .doc, .xls, .ppt, and .pps.
Transformation of a supported document can take between 1 and 30 seconds, depending on the complexity and size of the document as well as the speed and available resources of the dedicated computer. To provide for this ability and assure a fast response time, it is recommended that you dedicate a separate computer to this service.
Manage HTML Viewers
1. Click Start, point to All Programs, point to Administrative Tools, and then click SharePoint Central Administration.
2. In the Server Configuration section, click Configure HTML Viewer.
3. Select the Allow HTML Viewing check box.
4. In the Path to HTML Viewer Server box, type the full URL to the server hosting HTML viewing.
5. In the Maximum Cache Size box, type the maximum size to allow for the HTML viewing cache.
6. In the Maximum File Size box, type the maximum file size to view.
7. In the Timeout Length box, type the length of time to wait before ending an HTML Viewer process.
8. Click OK.