I am an Infopath newbie and am sorry if this is something I should have found with Google. I've searched for an hour or so and can't find anything similar.

First, my company uses Sharepoint 2010, however I only have access to InfoPath 2007 (possibly because we are still on Office 2007). Second, I cannot use Sharepoint designer because it has been disabled for reasons that I don't know.

I have created an InfoPath form that feeds a form library. I feel like it would be best to store the information in a Team Site List, however, I need the conditional formatting that is available in an InfoPath form. The Team Site says I need InfoPath 2010 in order to use a customized form to fill data in a Team Site List.

I can create new entries in the form library just fine, everything works great on that end. But, if I edit a previously entered document and then click submit on the form it will submit a new document. What I would like to achieve is to have the form simply edit the existing document. I'm sure this behavior is due to the Submit Button on the form.

So the question: I can see two ways of doing this, programming an Edit Button on the form (no idea how to do that). Or having a different form for the Edit Form. I see that this is possible with Sharepoint Designer, but can't figure out how to do it without access to that tool. I have viewed the library in Explorer and see all the different documents (most are .aspx), is there a default file name that will be used for a .xsn document that is the Edit Form?