Don't worry! It's only stuff...

Mobile Connect Settings (under Mac OS X)
Profile Name: t-mobile
Access Point Name: internet.t-mobile
Telephone Number: *99***1#
Account Name: t-mobile
Password: tm
Authentication: CHAP

NetzClub APN
pinternet.interkom.de

disable pin on sim card
sudo apt-get install gsm-utils
sudo gsmctl -d /dev/ttyACM0 -o unlock sc all YOUR_PIN_NUMBER

Links
http://blog.surgeons.org.uk/2008/02/three-cheers-for-vodafone.html
http://www.draisberghof.de/usb_modeswitch/
http://umtsmon.sourceforge.net/
http://www.bloggen.bwadewitz.eu/?p=95
http://www.dc-files.com - firmware
http://3g-modem.wetpaint.com/page/Huawei+K3765-HV+%28Vodafone%29
http://3g-modem.wetpaint.com/page/ZTE+K3565-Z+%28Vodafone%29