Asp.net Graphics.FromImage question

Hi,
I am just getting started with drawing in ASP.Net 3.5 using VisualStudio 2008.  I need to create floorplan drawings.  I'm having trouble creating the Graphics object to paint on.   I found a good video based done in C# in ASP.Net 2.0 where the Graphics object was created simply using Graphics.FromImage(b) where b is a bitmap object.  I have interpreted the simple code in VB.Net and I am trying to set my Graphics object to Graphics.FromImage(b).  I get the code error "FromImage is not a member of PermitPkg1.aspx.Graphics.  I know this is really simple but I've gone round and round and need some help

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Text
Imports System.Drawing.Imaging

Partial Public Class RoomLayout
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        'set up graphic object to paint on
        Dim b As New Bitmap(100, 100)
        Dim g As New Graphics
        g = Graphics.FromImage(b)


    End Sub

End Class

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