Its easy. There are two ways. Installed templates and Online templates. I am writing this for Office2007.
For installed templates:
1. Open Microsoft Word.
2. Click Office button (top left corner) and click "New".
3. It will show the document window. Left side will contain the Templates listing.
4. Click on "Installed Template" option. Word will show the installed templates thumbnail in the main area. Click to select the required one and press "Create" button (bottom right).
5. Word will open the document for you to edit and save.
For Online:
1. Open Microsoft Word.
2. Click Office button (top left corner) and click "New".
3. It will show the document window. Left side will contain the Templates listing.
4. Under "Microsoft Office Online" listing, scroll down the left hand side to find the option for "Resume and CVs", click it.
5. Word will show you the options. (like basic resume, job-specific resume etc), click any one you want.
6. Word will show you the templates after processing, select your required sample and click "Download" button (bottom right)
7. It will help you to download the resume template and will open to edit.
8. Use and save it.
Enjoy :-)