InfoPath Dev

 hi all,

i have a sharepoint 2007  form library has been published with Infopath form , it's opening in browser perfectly while adding a new one , and while opening within work flow too.

the problem is while making a view and choose grouping condition after trying to open any form for editing, a message box opened and allow me to choose between opening or saving the form.

i want to solve this problem  coz not all employees have an infopath program in their PCs.

Thanks in advance.

In the Library's -> Advanced Settings tab is it set to open in the browser by default?

 Yes it's, that's why i have mentioned that adding new form open regularly in the browser, and even opening the forms using direct link will, the problem is after making a  custom view and adding group to this view.