Mouselook is really...odd.

Ok FINALLY...

This is working:

'mouselook
mxspd:Float = MouseXSpeed2() / 15.0
myspd:Float = MouseYSpeed2() / 15.0
If mxspd <> 0 Or myspd <> 0 Then
	MoveMouse 400,300
	lastMX = MouseX()
	lastMY = MouseY()
EndIf
yaw:Float :- mxspd
pitch:Float :+ myspd
RotateEntity camera,pitch,yaw,0