Fausto,
You can build a connection string in your programs. This way you don't rely on DSNs on the client's machine. Here are some samples:

ADO connecting to a VFP database

oConnection = CreateObject("adodb.connection")
lcConnectionString = "Driver=Microsoft Visual Foxpro Driver; " +;
                     "UID=;"+;
                     "SourceType=DBC;"+;
                     "SourceDB=C:\Program Files\Microsoft Visual Studio\MSDN98\98VS\1033\Samples\VFP98\data\TestData.dbc"
oConnection.open(lcConnectionString)
oRecordSet = CreateObject("adodb.recordset")
oRecordSet.Open("SELECT * FROM customer", oConnection)

SQL Passthrough connecting to SQL Server

lcConnectionStr = "DRIVER={SQL Server};" +;
                  "SERVER=YourServerName"+";" +;
                  "DATABASE=northwind"+";" +;
                  "UID=sa"+";" +;
                  "PWD="
lnSql = SQLSTRINGCONNECT(lcConnectionStr)
SQLEXEC(lnSql, "SELECT * FROM Customers", "Customers")

SQL Passthrough connecting to MS Access

lcConnectionStr = "DRIVER={Microsoft Access Driver (*.mdb)};" +;
                  "Dbq=c:\temp\northwind.mdb;" +;
                  "Uid=Admin;" +;
                  "Pwd=;"
lnAccess = SQLSTRINGCONNECT(lcConnectionStr)
SQLEXEC(lnAccess, "SELECT * FROM Customers", "Customers")

For more connection strings, check out the following link:
http://www.able-consulting.com/ADO_Conn.htm

HTH
>Hi,
>
>How can I avoid creating a user dsn manually? Is there any way to create and configure it on install time?