It was a good time to resurrect it!
I've been pondering this for the last few weeks.
My setup is a Mackie 402 mixer going into a M-Audio 2496. I plug my guitar into a channel on the mixer and press the DI button on. I then set the gain level just below the point that the clipping LED will come on. According to the mixer manual I should have the main mixer level around 0dBs. If I set it up like that the signal is usaully way to hot in MC. I end up having the main level down around -12 or -24 dBs for the signal in MC to be comfortably below 0dBs.
My question is should I just continue like this or should I be reducing the gain so the main level is higher? It sounds alright the way I am doing things now but it's always something I end up thinking might not be right..