Want to work w/ multiple OS at the same time? Inside the same UI?
Well, time for you to check out VirtualBox's seamless mode by pressing your Host key + L
You can then have your Windows 7 running inside your Ubuntu 9.10, like this:
Enjoy :)
Links:
[1] http://pulse.veltsos.com/category/it/software/foss
[2] http://pulse.veltsos.com/category/it/innovation
[3] http://pulse.veltsos.com/category/it/virtualization
[4] http://pulse.veltsos.com/category/it/visualization