Dial In Blaster Threat?

I am currently responsible for supporting laptops that my users dial in to a RAS with. If the user’s laptop is running Windows 98 (I even have a laptop here with 95 on it – Yikes!), but the RAS is patched, are the Blaster/Nachi worms still a threat, or are we safe because we’ve patched the RAS? I don’t want another close call. Thanks!