Hi Alex,
I described the two steps of the transfer of money here: http://wiki.opensourceecology.de/Planraum_e.V.#Legal
The Google Doc of the TiVA Offene Buchhaltung is shared only between me and you. Just enter the data and I will receive email notification about it and transfer the money.
All this process is publicly visible here: http://wiki.opensourceecology.de/TiVA_Offene_Buchhaltung#Ausgaben
Thanks,
Nikolay