scrolling maps

Hello,

Im trying to make scrolling maps for my RPG (Visual Basic 2010 XNA) game, but without succes.

Can anybody help me making scrolling maps?

this is my code so far:

Code:

---

    Public Sub DrawMap()

        For x = 0 To 100
            For y = 0 To 100
                SBatch.Draw(Tileset, New Rectangle(x * 32, y * 32, 32, 32), New Rectangle(0, 0, 32, 32), Color.White)
            Next
        Next

    End Sub

---

but if my playerX > 30 the map won't show up because it will go of my screen. it should be something with the 'camera' position.

can anybody help please?

thanks