Absolutely not! You can just enable it in certain instances, which would be a pain for sure.but for 98 sharing every drive on the LAN...would not always be a gud idea
You might want to look into a corporate or enterprise solution depending on your size.
I use NAV Corp Edition and it works great.
Our old antivirus vender got bought out and Symantec sent us unlimited liscenses and no expiration on our suscription. We lucked out!