@adbosch: there is always some kind of risk involved when rooting a device. But after rooting and unrooting a couple of times I didn't run into any problems.
The rooting process is fairly simple too. Just extract the zip-file on you harddrive, connect the reader (data transfer mode) and start
minimal-root.zip is the flash_reader.bat. that is it.
you can grab the files here:
http://projects.mobileread.com/reade...lash_packages/