OK... looking at the PBC manual... here's the conversion... sombody can correct me if I've made a mistake...

Code:
	' LEDA is on PortB.0
	' LEDB is on PortB.1
	' LEDC is on PortB.2
	' LEDD is on PortB.3

	' RandomValue is variable W0
	' LEDValue is variable B2

Start:
	Low 0
	Low 1
	Low 2
	Low 3

	Random W0
	B2=W0 & $03

	If B2=0 then High 0
	If B2=1 then High 1
	If B2=2 then High 2
	If B2=3 then High 3

	Pause 1000
	Goto Start
Well, actually, you could probably reduce it further...

Code:
Start:
	Low 0
	Low 1
	Low 2
	Low 3

	Random W0
	B2=W0 & $03

	High B2

	Pause 1000
	Goto Start