Crystal Report & VB 6

I have installed VB, Crystal Report 8.5(completed) on XP or 2000
When I start VB, I can not find Crystal report 8.5 in VB project menu, I went to Project|component|designers, there was no Crystal Report 8.5 also.
sometimes, when I reinstall Crystal report, I can find it in VB.
sometimes(on another computer) I couldn't find it even after I reinstalled it.

anyone know the reason?

I am not an expert ;but I had tried :
Try Project--> Components --> Controls -->Crystal Report Viewer Control 8.5