InfoPath Dev

Hi, I have an issue I'm hoping to get some help with.  Here's where I'm at:

1.) Created Infopath webform that utilizes Excel Services to return the next Friday from today (excel sheet is in the same sharepoint domain - http://www.bizsupportonline.net/infopath2007/calculate-date-difference-infopath-rules-excel-services.htm )

2.) Admin approved, deployed, and activated webform ( http://office.microsoft.com/home/video.aspx?assetid=ES102050491033&width=884&height=540&startindex=0&CTT=11&Origin=HA102050471033 )

3.) Webform and library are both browser-enabled

 My question is...do I need to have the security set to Full Trust in order to use Excel Services in a webform?  It didn't work with Domain Trust ( I got a generic error: There was a problem when connecting to the data ).  When I enable Full trust, it seams that I can not get the form to open in the browser even with the admin approval, deloyment, and activation.  If anybody has any insight here I would greatly appreciate it.

 Thanks,

 Marko

You didn't mention what actually happens (or doesn't happen).  What does it do?  What error(s) do you get?

When I post a form with Domain Trust and click a button that utilizes Excel Services, it says: "An error occurred accessing a data source."  Very descriptive error...I know.  When our SP Farm Admin posts the same form with Full Trust, I cannot access the form via web browser.  When it does open, it opens in the InfoPath app and warns me that "The Publisher has not been authenticated..."  It lets me load the form and the Excel Services button works in the InfoPath Client, just not when the form is opened via browser (currently only the Domain Trust form opens in the browser).  My goal is to have the form open via web browser on our SharePoint site with a working Excel Services button.  Thanks for your time.

Follow-up: I found that the version that opens in the web browser is actually Full Trust, so apparently the security level is not the issue.  Utilizing Excel Services via browser form is the issue.

That's not a normal trick, so you probably need to speak to SYM Wong-a-Ton about it - the person whose blog you followed to build this.