you know steam? and all the steam windows that you can still see while playing games by pressing escape? like friends, and how the options windows and stuff like that has formatting that looks like Steam...well that's VGUI2, original VGUI is the menus while in game. Unless I'm mistaken. But I remember when the HLServer started to look steamlike before steam was even out as a beta they said it had a VGUI2 interface but everyone still runs major servers on console mode, VGUI2 takes up too much sys resources.