SQL Server 2005 Sp4 Connection Issue

Is it possible via connection string, specify to which schema refer, just to be more clear, I cannot refer to dbo, I have a schema named as the username, it's an shared hosting environment.

This is my actual string:
Data Source=ip number;Initial Catalog=DB name;Integrated Security=False;User ID=Username;Password=password;Connect Timeout=0;Encrypt=False;Packet Size=4096

Thank you all in advance