Upgrading from Access 2K to ...?

[J. D.]

What statistics would be most beneficial in determining the most "bang
for the buck" for my Access project? It is in Access 2000 (frontend
and backend) running on a MS Windows 2000 server, W2K clients (approx.
50 at a time).

At a minimum, I think I need to tell you all:
1) Number of forms
2) Number of tables
3) Amount of data in tables
4) Number of concurrent users (already did)

Anything else?

The program is robust, but slow in loading and slow in runtime.

Thoughts we've had:

1) dotNet
2) Backend port to SQL Server
3) Access 2K3 (wouldn't get us a whole lot?)

Your advice would be appreciated. Thanks.