As I recently wrote, Dell and HP are selling select, business computers loaded with Windows XP Professional. Customers can have Windows XP preinstalled and get a DVD to upgrade to Vista when they are ready.

Dell and HP’s decision to continue selling a nearly seven-year-old operating system, got me thinking about which Windows version TechRepublic members most often support.

Answer the following poll and let us know which Windows version is the most prevalent among your end users.