You havent made the edit in bde administrator
1. Go to youre control panel (if using me, xp select switch to classic view)
2. Open the icon for BDE administrator
3. Right click on Databases and select new..
4.Leave "Database driver name" at standard and press ok
5.Rename HeroDB
6. Change the path to your mir directory /mud2/db for most servers it is
C:\mirserver\mud2\DB