You can use SQLSTRINGCONNECT()

Here is an example for oracle:
h=SQLSTRINGCONNECT("DRIVER={Microsoft ODBC for Oracle};UID=DOB;PWD=runtime;SERVER=PDML;")

I don't know the name of the driver you are using and syntax exactly but

What I do is hard code the driver part:
DRIVER={Microsoft ODBC for Oracle};

Then append the server,login and username (UID=DOB;PWD=runtime;SERVER=PDML;")
) from my login dialog and pass it to
SQLSTRINGCON()

To get the syntax correct make a new database container in foxpro and then use the "connections" and create a connection string. You can test the connection here and get the exact syntax.

HTH