Hi PCD/Kalehrl,
thx for your help. Using PCD´s DM600-Image which i extracted to a temp directory on the HDD of my VU+Duo using nfidump i could see what the tuxtxtOk.sh script does, so switching tuxtxt on by copying /usr/bin/enigma2.sh_txtok to /usr/bin/enigma.sh and copying the /usr/lib/enigma2/python/Plugins/Extensions/Tuxtxt/plugin.pyX to /usr/lib/enigma2/python/Plugins/Extensions/Tuxtxt/plugin.py activated the teletext-button (just in case you like to fix it wihtin your image)
Everything i wanted (Network, Web-IF, CCcam, Teletext, Nemesis-Glassline) works now without extending the flash - And thx to Kalehrl i can create a stable, operating baseline-nfi-image to quickly restore production in a "wife-accepted-mode" ;-))
cheers
peterzapfl