Before upgrading WWF from Beta 1 to Beta 2, prepare yourself to rework a lot of code. Marc van de Wert outlines the changes to the parameters (which have been replaced with properties). On his blog, you will also find a link to a complete (20-page) list of changes written by Paul Andrew. See: http://www.marcvandewert.nl/PermaLink,guid,907c5118-1be0-4c3a-a0be-8ad4a592e6b1.aspx