Truckstops and POI patches for Microsoft Streets and Trips

I bought Streets and Trips 2009 a few days ago based on another truck driver telling me that he loves it. I too drive a truck and I need to find the truck stop patch so that my map shows all of the truck stops across the USA. He also told me about a low bridge and a hazmat route patch. Does anyone know where to get these patches (hopefully for free)?
Any other patches would be appreciated!

Take a look at Truck Stops Plus. Brian has put alot of time into the site. He also has a tutorial site to help use this product. Hope this helps if you purchase this program tell him Rukstr sent you his way. Thanks Rukstr

Discovery motorhomes has a web site with Pilot, Flying J and (I think) Love's Travel Centers. There are other POIs and they're RV friendly. Of course, that means big vehicle friendly so it might help you. There are also some clearances that can be overlayed as POIs.

Check Here: http://www.discoveryowners.com/cginfolinks.htm