Hi,
What each of this settings will do to the horizontal geometry?
I would like to change values to move the screen slightly to the right to get it centered. My question is to know which of this items I need to change and should I increase or decrease the value?

HFrontPorch: Horizontal front porch period.
HSyncPulse: Horizontal sync pulse period
HBackPorch: Horizontal back porch period
Thanks
Rick