Have A Collision In .net XNA Using .net Codes And Format?

How To Have A Collision In VB.net XNA Using VB.net Codes And Format. Doing Collision In Normal Windows Form Application Is Simple By Calling Two Picture Box. Example:

If(enemyRectangle.Intersects(p�layerRectangle)) Then
'Do code here
end if

But In XNA VB.net, There Are No Multiple Picture Box Or Windows Forms Thingy Buy Only One Picture Box Which Contains All Sprite Block And Display.

Here Is The Class Content Code:

Public Class clsContent
Public Class GameContent
Public Content As ContentManager
Private ServiceHelper As New ServiceHelper

[code]....