InfoPath Dev

Hi, click on tools, forms option, security and trust, and put him to full trust and sign your form.

Is that what you want?

You're welcome.

With code you can get all you xml with the a Web client or Sharepoint Web services, here an example: http://www.bizsupportonline.net/infopath2007/programmatically-retrieve-infopath-form-from-sharepoint.htm

You're welcome :)

Can you attach your form template ?, when you reply, click on option...

Hi, you can do something with an external data source like a XML file, and set a filter to this xml. I send an example to figure it out. If you select "2" all the uncheck choice disappear, you have to clear "T3" field to re-appear all your choice

Hi, I suggest you to use a default value to your TotalBillAmount intead of set a rules. You can use the Sum function.

I'm not sure it help but have you check this : http://support.microsoft.com/kb/896861

Not to my knowledge, sorry