Thanks a lot. Came back after 2 weeks no internet (was moving) I did read the 2 tut's, made my own way through this and bam. Android on dualboot with oc options. BIG THX to all who made this possible so far.
This wifi bug is a pain in the a. I tested about 5 times with rebooting, no connection. Scanning worked,but could not connect. Now after a other reboot, im connected from the beginning

edit : Its the only way that the n900 gets wifi. When i try to reconnect manualy,..... no way. Anything i could try ?