Inserting into SQL Server

This is the first time I've tried this...
I've got this syntax:

void Page_Load(Object src, EventArgs E) {
string connectionStr =
string insertQuery = "Insert into Events VALUES " +
"('"+Session["Name"]+"', '"+Session["Phones"]+"')";
SqlConnection connectObj = new SqlConnection(connectionStr);
SqlCommand commandObj = new SqlCommand(insertQuery, connectObj);


The error message I get is this...
Login failed for user '(null)'

I have two application servers DDATA ( AND DWEB on the
same DOMAIN...
I'm trying to use an insert statement (confirm.aspx) on DWEB into a sql
server DDATA.

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