IIS7 URL rewrite with pixel tracking?

Question

I'm trying to setup a PNG image to handle pixel tracking in IIS7 Url Rewrite, but it doesn't seem to be working with the way I'm entering it. Any idea what I am doing wrong?

<rule name="PixelTracking">
  <match url="^pixel([0-9]*).png?OrderTotal=([0-9]*)&amp;OrderID=([0-9]*)" />
  <action type="Rewrite" url="^Confirm.aspx?StoreID={R:1}&amp;OrderTotal={R:2}&amp;OrderID={R:3}" />
</rule>