InfoPath Dev

How can I calculate time using day of the week ie if it is Monday to Saturday I want the times to be added in one box Hours @ 1.5, if the user selects Sunday or it is a Public Holiday then this should be added in a separate field Hours @ 2.0     

This is a brilliant article to get you started: http://www.u2u.info/Blogs/Kevin/Lists/Posts/Post.aspx?ID=39 I used it for an expense claim system I wrote. Also go here http://spdactivities.codeplex.com/ for additional SharePoint Designer activities.Good luck!!!