Have you tried another OS, I don't think VF 1.0 is supported on NT?
Are you missing the tabs for them or do they not show up in your pre-render? Slower systems have trouble displaying special effects when pre-rendering.
As for Win 98, you should be able to instal VF 2.0. Just make sure you have installed the DirectX 8 and Microsoft DV updater before you install VF 2.0.