After I had done everything according to instructions, but I just could not connect to the Internet, neither with iPhone, iPad or netbook. So purely in the forums and research. Here there were some who had the same problems. Tried everything and nothing brought the solution. So only one night sleep over it.
The next morning, my plan was only once an update to search (firmware). Was on the side Netgear also find with firmware 1.0.1 ...). So logged with Ethernet cable and netbook in the repeater and the firmware update function file (previously saved to disk) upload and update carried out. Here then was also an indication of the WAP-PSK encryption has not previously.
... And surprise, surprise, after the device worked in one shipshape. NETGEAR_EXT read to select easily as Wifi and I now even in the deepest cellar full Dsl Power (previously 177kb throughput and now 4000 kb).
Conclusion: Setup the devices that are so apparently delivered even with old firmware, a nightmare, with new firmware is apparently without problems. I almost returned the device. For PC novices not recommendable. If the repeater is working directly I would have given 5 stars. So but only max. 3. Since Netgear needs when it comes to instructions and tips, rework. 1. Note: Make sure to first a firmware update (with precise instructions) and then detailed installation instructions.