Use any server-based language supporting a server-based database. This is something for professionals at the moment.
Try the web design forum?
Kees
I need to have 3 people sharing one Excel file as a master database of information. I have my own website, but how can I give them the ability to update the file the way that I can? I am new at website use, and a little better on Excel. Any ideas?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic