What you want is perfectly feasible and workable. Access uses a special file (.ldb) top avoid someone trying to edit/delete a file if someone else is using it. There lies one of the strengths of Access - it's ability to work on a network.
But it needs needs much more than we can go through on a forum like this! And it all starts off with setting up users and levels.
The Help pages in Access to give descriptions of how its done. Perhaps print them off and work through with a 'spare' copy of the database?
And A97 is a little 'older', a browse in your local library may find an Access book with some help on networking.
If all else fails, there is a good help forum (free registration) and quite busy - meaning that a lot of people look at it - at click here It's a good site - I've used it often.