Call a class in form

Hi I got a class which read the ip address from the textfile. If my codes at first is read in local host, how do i pass e class into it, n change my server codes?
Below are e codes for reading in local host

Protected Const SQL_CONNECTION_STRING As String = _
"Server=localhost;" & _
"DataBase=CasadDB;" & _
"Integrated Security=SSPI;Connect Timeout=5"

Please reply asap, my time is running out. Thanks all..

Hey, u all understand wat i mean?

Nope.