Well, you should at least give it a go - if for no other reason than to find out if it works! One note about using AppleShare on NT - it's notoriously buggy. I've heard reports of memory leaks and crashes. Oh, and you said you didn't know the difference between "sharing" and "mounting"...
Sharing: Pretty obvious. When a server provides a resource to be used by other systems on the network.
Mounting: When one machine connects to a shared resource and presents it to the user as a part of the local filesystem. For example, let's say Server is sharing a folder called "Share1". If I get on my Mac, and mount the resource, it will appear in the finder as "Share1".
You mount shares, make sense?
These definitions are by no means rigorous, so techies please don't flame...just trying to put it in "layman's terms" for a guy that is somewhat new at this stuff
Good luck, sambeau...
-n8