Well lets see if M$ can beat the workstation cost from switching to open source.

"SAN FRANCISCO--Telecommunications company Verizon Communications saved $6 million in equipment costs by moving its programmers to Linux computers, the company said Wednesday.
The company cut costs by replacing programmers' Unix and Windows workstations with Linux systems that run OpenOffice instead of Microsoft Office, said George Hughes, a Verizon executive overseeing the work. The average desktop cost went from $22,000 to $3,000 per developer, he said in a talk at the LinuxWorld Conference and Expo."
Complete story http://news.com.com/2100-1001-949913.html?tag=fd_top