Another option is to save your photos to a CD or DVD (this is what I do!). To do so, just follow these steps:

a. Open the Windows Live Photo Gallery

b. Select the photos you want to burn by holding down the CTRL key and selecting the photos with the mouse. Use CTRL + A to ?select all?.

c. Click on ?Make? in the taskbar (a few over from File)

d. Choose either ?Burn a DVD? or ?Burn a data CD?

Here is more on backing up (including backing up to an external hard drive) - http://windowslive.com/Connect/Post/8abcd44d-e2fb-4d1d-8efc-cb24e55038ed

Hope this helps!
Cassandra