You select Bam headtracking in VPX editor video preferences and all your vpx emulators will have bam headtracking selected.
If you have bam headtracking selected you need to activate your camera, otherwise you will se a black screen when launch the table
I figured that part out and got the head tracking working. I was having trouble launching the table in normal vpx (no head tracking) after the headtracking was working -black table like you said. I want to be able to choose head tracking or normal mode.
I just found the answer on an other site a few hours ago. VPX 10.8 saves the preferences data in your windows/user/app data/VPinballX\VPinballX.ini file. To have both normal mode and an alt launch mode using head tracking, you need 2 different .ini files and then have vpx use one of them and vpx_GL use the other .ini.
I would post the link to the how to, but I don't know if I'm allowed to link to an other site. If anyone knows if it's ok to post the link, let me know. Thanks