duh! I figured out Kasperksy firewall was blocking my laptop from accessing the readyshare.
there also seems to be the problem, that one has to enter"\\readyshare" in RUN to see it.
Besides these hiccups, it works (it is slow, though). I'm right now transferring data to the HDD via LAN and it only goes to 13 Mbit. Is that USB limiting?