[dba-SQLServer] Backing up Windows 2008

I need to do a system disk backup for Windows.  I am probably going with Acronis home for all of my 
non-server machines, however they want something like $500 / machine for server licenses.  While I 
am sure it is worth it, I just don't have that kind of cash just to get a backup.

I have never used the Windows built-in backup but it seems that it does exist.  Has anyone here used 
it?  Restored from it?  Easy / hard?  Potential issues?

-- 
John W. Colby
www.ColbyConsulting.com