Why on earth is this so complicated?
It's not really, but like most things in life the first time requires a little more effort but once you crack it you�ll have a smile on your face.
1) Download the Meridian Common Installer
2) Use that to download the Mconfig, etal.
3) Have a 'play' with Mconfig to get the feel of it and try out different setups with your G68, speakers, sources etc.
4) If your wish, just use the G68 wizard to replicate the Mconfig setup (note MRC is Mconfig only).
or 4) Download and install the drivers for your PC (ignore the complicated words just note the comms port number).
5) Connect a USB cable from PC to G68
6) Test the connection with Mconfig, using the comms port number from 4.
Then you are in a position to download config setups from Mconfig to the G68.
or4) You could forget the G68's USB connection and just use its RS232 port instead.
5) Connect a RS232 NULL modem cable from PC to G68
6) Test the connection with Mconfig.
I think this is better as your other Meridian kit only has RS232, so you need this connection type anyway. However, note that if you don't have an RS232 port on your laptop you will need an USB to RS232 converter. See Wiki for more information.
Meridian is extremely flexible, but it's not plug and play, one has two options:
1) Read and re-read the manuals and have a go with advice from here. Meridian manuals have improved over time but they are not great, but we can help you work through with this.
2) Pay a dealer to set it up for you. For some folk this is the best option.
Hope this helps.
Regards,
Carl