I’ve had an MSI Wind U100 (a slightly older, ten inch model) for a little more than a year now, and I’ve really liked having it. It’s super convenient for travelling. I replaced the RAM the week I bought it, bringing it up to 2GB. Ever since then it’s run Windows Vista, and now Windows 7 (thanks Technet!) like a champ. The only complaints I ever had were the battery life (now solved, thanks to an extended battery I bought online) and the touchpad. MSI used a Sentillec touchpad with the Wind which is unfortunate because the scrolling sucks when compared to Synaptics touchpads, and lately it had started being super flaky. Sometimes it would work and sometimes it wouldn’t.
Since the Wind has been out of warranty ever since I upgraded the RAM (had to break the warranty void sticker to open it up for the RAM), I decided to go the route of replacing it myself. I found a replacement touchpad on Ebay, and then found these two YouTube videos which showed step by step how to disassemble and then reassemble your Wind with a brand new touchpad. All in all, it was pretty straight forward, and the Synaptics touchpad is much nicer to use day to day.
Here are the videos in case you’d like to do something similar: