Max Akbar has updated his very handy OrderFormViewer to CS2K7/.NET2.0.  This tool is very handy for viewing the entire contents of a purchase order including what is stored in the BLOB mashaled_data field.  Get it from Max's CommerceServerTraining.com site.

(Updated link as the GotDotNet workspaces are gone).

http://www.commerceservertraining.com/uploads/CS2007OrderFormViewer.zip