[Ian Robinson]

I'm running XP Pro SP2 on my Laptop.

And XP Home SP2 on the desktop (that's what it came with and I haven't upgraded it to XP Pro seems to work OK as is even if it is a HP Pavilion and we've had nothing but hardware problems since we took delivery of the it .... I'll never buy another HP).

I see no good reason to "upgrade" to Vista.