Microsoft Office Template Gallery ~ Hundreds of free templates for Office are available, ready for your instant use, and you can preview them right inside your (Internet Explorer) Web browser. Categories offered include Staffing and Management; Letters to Customers; Marketing; Legal; Business Forms; Stationary, Labels, and Cards; Your Career; When You're the Customer; Meetings, Events, and Projects; Finance and Accounting; Publications and Education; and Personal Interests, Community, and Politics. There's also a search function to help you find the templates you need. Office 97, 2000, and XP are supported. By the way, remember that you can use these templates in StarOffice as well!
http://officeupdate.microsoft.com/templategallery/default.asp

Corporate Windows Update ~ This site allows you to download the updates to Windows for backup and later use. If you use use Windows 2000 or XP, use this site:

http://corporate.windowsupdate.microsoft.com/en/default.asp

If you use Windows 98, use this site instead:

http://www.microsoft.com/windows98/downloads/corporate.asp

Configuring Windows To Show Extensions ~ How to set up Windows so that file extenstions are visible.