kyle rankin @ oreillynet.com has small synopsis on Knoppix 3.8 and UnionFS. To put in simpler terms, any average user , meaning windows user , now can use Linux Live-CD in windows , easily. oreillynet.com Below is small excerpt. " Klaus has released the latest version of Knoppix, 3.8, to the crowd at CeBIT 2005. This version includes the normal round of updates including the 2.6.11 kernel by default, KDE 3.3.2, and Firefox and Thunderbird instead of Mozilla. The exciting news, however, is the addition of UnionFS. UnionFS stacks your Knoppix ramdisk on top of the read-only filesystem on the CD, the effect being that you can apt-get install, and otherwise modify all of the files on the system as though they were all writeable. Here I'll go over why I think this is going to change Knoppix in a major way. " For full read, go visit oreillynet.com