If you own or are about to own an Asus R2H Ultra-Mobile PC, you can now journey to the Windows Vista Express Upgrade Site to make your upgrade. The R2H is now listed and eligible for the Business edition of Vista. Remember some OEMs may be handling this differently so if you can’t find your product listed their check with the OEM or vendor. If you haven’t checked out whether or not you’re eligible for other products, here’s that link again.
Hat tip to jkOnTheRun