XVidMode is required for Gamma Control

[Molle Bestefich]

Jesse Allen wrote:
> I think it used to default to Y until the switch-over to the registry,
> and the setting got lost.

Perhaps that's why Starcraft suddenly started becoming playable?

You use the mouse to scroll the play area in Starcraft, it's
completely broken unless the mouse stays within the window.  Used to
be broken a year ago or so, works dandy now.

If you change this, ping me and I'll test Starcraft?