This sounds like a daunting topic but it's actually quite simple to
understand. Full virtualization is what you get with products like VMWare
which create a complete virtual PC within your PC. Light virtualization is
where you virtualize only some aspects of your PC not the whole caboodle. The
advantage is you are only working in one environment yet get a similar
ability to revert changes such as malware infections and programs you are
testing out. The well known Sandboxie product is a good example of light
virtualization but there are numerous others equally useful. In this
excellent article, editor "Dedoimedo" reviews what free products are
available and lists pros and cons of each. Recommended. - Gizmo
http://www.techsupportalert.com/content/introduction-light-virtualization.htm-0
