SeldomVisitor --
I agree with you that wireless's installed base (other than simple cell phones) in the corporate world is miniscule compared to laptops and computers. However, I think the level of interest in wireless is pretty high, both for mobile employees (e.g the ones currently using Blackberries) and for managers. IMO the Microsoft smartphone and wireless PDA platforms are gonna own the corporations that are already committed to the Windows platform for their PCs and laptops.