Sharing Outlook 98/2000 Calendars withou

I need to give users access to my Outlook Calendar (Schedule). I’ve read sheet’s from Technet and it says that I can only do it with Exchange. There must be another way. I have a ton of pre-existing email and would like not to loose it. Also, the people connecting to my file also have their own email and calendar’s as well. The solution must be simplistic cuz they are not extremely computer literate.