As one of our visitors emailed us "...You can force NERO showing the actual writing speed of Z-CLV recorders, with a simple registry trick..."! a) Install latest Nero version (5.5.9.0)
b) Press at Start->Run->(Type) Regedit.exe
c) Look for 'HKEY_CURRENT_USER\Software\ahead\Nero - Burning Rom\Recorder' key and change the DWORD 'ShowSingleRecorderSpeed' value from 0 to 1 (right click->modify).
d) Press Ok.
e) Close Regedit and here you go!