Just connect display VDD to any output pin of pic.
To turn off display set to 0 all data and control pins for display, then set Vdd to 0. If output pins going to display isn't cleared, and Vdd is set to 0, that will probably damage LCD.
To power up display:
1. set Vdd pin to 1
2. FLAGS=0 'Clear PBP flags to enable LCD Init on first LCOUT command
3. PAUSE 1000 'Wait for display to turn on
4. LCDOUT $FE,1 'Clear and Init LCD