Hi @mixohoytian, sorry for this late reply!
The free Peacemaker was released with 6 profiles three from the HI gain channel and three from the low gain.
The GB means GreenBack, 30 is the Vintage 30, LB is the Lynchback, 75 is the G12 75, and the 20 is the EVH, all Celestion on 4x12 cabinets
This was a very early free release and I hope I can update 'em all soon, with the new cabinet scheme and eq, coming from the experience of the 2.0 and 3.0 commercial releases.
Thanks!!
Roberto
The RockProfiles team
http://www.rockprofiles.com