Wildcart search - where to put the %%

I can't figure out where to put the two %% in this code?

<%
Dim sog__MMColParam
sog__MMColParam = "none"
If (Session("sog") <> "") Then
sog__MMColParam = Session("sog")
End If
%>
<%
Dim sog
Dim sog_cmd
Dim sog_numRows

Set sog_cmd = Server.CreateObject ("ADODB.Command")
sog_cmd.ActiveConnection = MM_Conn_STRING
sog_cmd.CommandText = "SELECT * FROM Bog WHERE " & "" + Session("valg") + "" & " LIKE ?"
sog_cmd.Prepared = true
sog_cmd.Parameters.Append sog_cmd.CreateParameter("param1", 200, 1, 255, sog__MMColParam) ' adVarChar

Set sog = sog_cmd.Execute
sog_numRows = 0
%>


Could somebody please help me?
Thank you
Frank