I've seen the post (and already replied). It's working great, (even better without the pri and session parameters).
Most of the switches were somewhere in this topic, and I just used them. But some time ago, I've wanted to install AVG in another directory other than the default, and as far as i know, there was no known option for that. So I started looking in
the installation directory of AVG. To make a long story short, I opened setup.exe in a hexeditor and did a search for one of the known options (HIDE or DONT_START_APPS or something like that). That's how i found out about "TARGET_DIR" and recently NOAVGTOOLBAR and that the option SCRIPT_FILE was there. Once I've found the options, I just played around with it.
The following option for instance in only useful if you have "Microsoft Visual C++ redist ..." installed before AVG is installed.
Otherwise the installation of AVG fails.
I can only tell you where to look, but from there on, It's also a big mystery for me.