next steps: Pulled "HUAWEI Data Cards Linux Driver" from
http://www.huaweidevice.com/worldwide/downloadCenter.do?method=toDownloadFile&flay=software&softid=NDcwMzU= With this I was able to enter the PIN and get "mobile broadband" in NM ... although still no connection. The install-process of this driver-set is a bit problematic with gentoo ... some things don't fit too well and I assume that linux 3.8.4 doesn't fit exactly as well. But small progress, yes. Stefan
