SQL 2K Stored Procedure: VB.NET

This is my first shot at using Stored Procedures and VB. I have always used direct quaries against the DB. I AM HAVING TROUBLE AND NEED HELP. When I return a value from my stored procedure, if there's more than one row returned, how do I handle it? Here is my stored procedure:

CREATE PROCEDURE [dbo].[paw_GetOpenDates]
(@WEEK int,
@TEAMID nvarchar OUTPUT)
AS
SELECT HomeID
FROM Schedule
WHERE (VisitorID = 'NO') AND (Week = @WEEK)
RETURN
GO

Here is my VB Code:

Dim cn As SqlConnection = New SqlConnection("server=10.1.11.2;initial catalog=POWPOW;User ID=PAN;Password=PANDA;")
Dim sqlcmd As SqlCommand = New SqlCommand("paw_GetOpenDates", cn)
sqlcmd.CommandType = CommandType.StoredProcedure
Dim sp As SqlParameter

' Dim SBError As New StringBuilder
sp = sqlcmd.Parameters.Add("@WEEK", SqlDbType.Int)
sp.Value = 1
' Count Output Parameter
sp = sqlcmd.Parameters.Add("@TEAMID", SqlDbType.NVarChar)
sp.Size = 50
sp.Direction = ParameterDirection.Output
Try
cn.Open()
sqlcmd.ExecuteNonQuery()
--> dim jj =sqlcmd.Parameters("@TEAMID").Value <--
Catch objException As SqlException
Dim objError As SqlError
For Each objError In objException.Errors
MsgBox(objError.Message)
Next
Catch ex As Exception
MsgBox(ex.Message)
Finally
cn.Close()
cn.Dispose()
cn = Nothing
End Try