RTFM as we say in the trade, check the manual for the pic basic, theres are example circuits to show possible connections. however note that using a graphic LCD is a little more complex 2 reasons. a) the display is dumb and has to have fonts loaded to it which have to be included in your program listings. and b) there are a few more data wires etc.
once you get it working it'll bring a whole new light than over using a standard 2 line LCD.

Chris