Collision Detection for bullets

heres some an example thats completely done using camerapick

Graphics3D 800,600,16,2 ;set up graphics

;create a box to shoot
Local box = CreateCube()
PositionEntity box,0,0,5
EntityPickMode box,2 ;set its pick geo

;create a camera
Local cam = CreateCamera() 

HidePointer(); hide the mouse
While Not KeyHit(1)
	
	If MouseHit(1) Then 
		If CameraPick(cam,MouseX(),MouseY()) = box Then ;check if the user shot the box
			Text 400,300,"YOU SHOT THE BOX"
			Flip
			Delay 1000
		Else
			Text 400,300,"YOU MISSED THE BOX"
			Flip
			Delay 1000
		EndIf
	EndIf 
	
	;update and render stuff
	UpdateWorld()
	RenderWorld()
	
	;draw a pointer
	Oval MouseX()-6,MouseY()-6,12,12,False
	Line MouseX(),MouseY()-7,MouseX(),MouseY()+7
	Line MouseX()-7,MouseY(),MouseX()+7,MouseY()
	
	Flip
Wend