Here is a great way to transform your MSI Wind U100 to a touch screen without needing a solder. Of course, do it at your own risk. This kit is sold at US$96.08. Seems easy to connect and make it work. The site even provide instructions on how you can do it. But I guess you can forget about the warranty if you do it. 
More pictures and information after the break.
TouchKit Features
- 4-Wire 10.2″ Analog Resistive Screen
- Touch Screen Response Time <10ms
- High Transmittance >85%
- 25 Points Linearity Position with Edge Compensation
- 3 Additional USB2.0 Ports for Future Modification Plans
- Supports Windows, Mac and Linux Drivers
- Supports 11 Languages for Windows
Here is a simple block diagram to show how the touch kit is connected in the MSI Wind U100.
Click Here to go to their Official Website
[ad#boxlist]
(source)