Last night I installed Windows 7 Home Premium on my Acer Aspire 1 (ZG5, 120gb hd, 1 gb RAM). I was pleased that most drivers were installed by 7, and to be honest it runs better than XP, even with all the Aero features on - smoother drawing of the screen contents, smoother video. Q1) I would like to have been able to add the 'Launch Manager', which seems to not work except with XP. [I've cut a bit here about a faulty Touchpad driver because Ive now found a working Windows 7 one on the Acer site but under AOD150 instead of AOA150.] I'm a bit anxious about the fact that I used the same copy of Windows 7 I bought as an upgrade for my Vista laptop. They were installed differently: on the Vista laptop with no use - at least by me directly - of the Product Key. With my Acer I seem to have effectively used the Upgrade DVD as a Full version. I see people unselfconsciously talk about TinyXP and whatnot here so maybe I'm being overly meek... Q2) As far as I can see, there is no real difference between the Full and Upgrade versions, just a different license, is that right? If you install from your Vista/XP desktop it acts like an Upgrade, but if you boot from switching on it's effectively the Full version? I used the newest simple USB way of installing, Novicorp WinToFlash - a lot less hassle than all the guides here that I used for XP before. I activated the OS by automated phone method, partly in the hope that Microsoft talk of periodically assessing validation through the Updates processes is just b.s. to inspire multiple purchases. Q3) So am I likely to end up getting some automated gripes from Microsoft that might be accompanied by disabling one or both of these machines? Q4) What would happen if someone activated a legitimate Windows 7 on their Acer and then the machine died the next day. Would Microsoft prevent the £60-£200 OS being re-used on something else? It's the apparent outrageousness of their licenses that have had me doing what I want so far. The thought of somebody buying two or three identical OS discs or even a three license purchase to be used in the same home is madness. Thanks for all thoughts, facts and assistance.