Linux is NOT a option for desktop users.

1) The GUI suck compare to Windows. (Even Red-Hat understood that and move away from home user distro)

2) Ever want to try to change a OS that everyone is use, understand and love with something new that nobody understand even the IT tech guy? People don't love when you change the stuff that is working and that they liked. They know little stuff but they are proud to know.

3) You have any idea of the cost of intergration?

Like I said, you're not in the industrie, you have 50 dumps user to support, a management who don't want to invest and like I said before, the cost of moving to Linux is way more important and upgrading machine with Windows XP because at the end, you'll have to upgrade your machine even if you run Linux!