Thanks for the feedback. The figures were given to me by a user I talked to that did a VDI cost estimation exercise and consulted Microsoft about the license situation. The costs are additional to Vista (or XP). You could check it by asking Microsoft direct.

I’ve not taken the cost of the project into account in either case. Both VDI and PC Blades are relatively new and there are glitches. PC Blades seems to be easier to implement, as you’d expect. The complexity of VDI varies according to the technology you use. There is a choice of brokers. I know of several VDI implementations where consultants were not used. Proof of concept with VDI can be fast, but a good deal depends on complications like printing needs and USB devices. It depends what you model and how complex PC usage actually is.

I hope this is useful.