InstallFree 7Bridge can virtualize and isolate applications from the rest of your desktop, so you can run older, legacy apps on more modern operating systems.

InstallFree 7Bridge
http://installfree.com
Pricing: $25 per endpoint with the first application included, additional applications are encapsulated by InstallFree at $5,000 per application plus an18% annual support/maintenance contract. There is also an enterprise edition that includes the ability to encapsulate your own applications. Volume discounts available.