The Register just wrote an article panning the DRM on the Windows interface for this NAS drive. The comments pointed to a wealth of info about how to hack straight into the Busybox Linux and make the drive do the stuff you want it to.
Link to Register article
Link to Martin Hinner's page, which links to the wiki

Provantage has a $40 instant rebate (expiring 10 Dec) on the 500M version of this NAS. Final price after rebate is $169.18 plus shipping and handling, a full $40 les...