Running Linux Apps Seamlessly Insinde Windows for 100EUROS or Less

1. Get a license and install windows (XP/2003/Vista): blah, blah, blah, next, next, finish ... ~100E for Vista Home Premium
2. Download & install Virtual Box: blah, blah, blah, next, next, finish ... 0E
3. Download & install Ubuntu (latest): blah, blah, blah, next, next, finish ... 0E
4. Press <Host key> + L ... priceless

Tada!

PS: this post was written with Google Docs on Firefox running on Ubuntu linux running on Microsoft Windows 2003.
PPS: only one operating system was restarted during the creation of this post.