database implementation needed

Hello everyone,


Since we have to manage over 1000 prospects and clients, I would like to migrate all entries from Exel sheets to a database.
I am thus looking for a solution to do that.
Basically what I imagine is a simple graphic user interface where you can look up the entries modify them and add comments. Maybe the interface could have Tabs like "Prospects" and "Clients" and I would then be able to move entries if a prospect becomes a client.

We would like to host this on our in-house server and 4-5 clients will be accessing the DB. (All clients are already hooked up to the server through MS Windows Server 2003)

Any help or suggestion is very welcome!

Thanks in advance

Greets