I think its because you do not have a DSN setup.
Start - > run " odbcad32 " -> Add
Type in A Name / Description / The SQL server
Such as this
Name : Gunz
Description : Gunz
SQL server : PBGUNZ\SQLEXPRESS
Click on Next If you installing mssql2005 With SQL server authentication Then The user would be " sa " and the password you Added in the installation If not Choose WINDOWS NT Authentication Hit next then Change the default DB to your Gunz DB Click on next Then hit finish
Now go back into your match server and Add the info in Server.ini