Hi,
I thought that for installing ubuntu in a netbook it might be easy. However after all, netbooks and PCs have the same limitations for using an specific amount of partitions.
They guy have suggested how to avoid repartitioning your hard drive, and let you get ubuntu and windows in your system ;-).
See http://www.howtogeek.com/howto/17486/install-ubuntu-netbook-remix-with-wubi-installer/