InfoPath Dev

My situation is I have an site where I have users submit an InfoPath 2007 form into a MOSS form Library.  The intent is, that once the form is submitted the user has nothing else to do on this site.  The form goes through some processing and is moved to a new location with a workflow.

The problem is, when the form is submitted, the from shows as checked out to the one who submits it.  I would like to check it in without any user intervention.  Is there some setting in InfoPath or SharePoint that will do this for me automatically when a form is submitted, or will this need to be done with a workflow?

Is it possible to have a workflow check in a form that a user has checked out, does anything special need to be done with permissions to do this?

Thanks

Do you have the form library set to require check out?  That would be the only reason it does this, because it's not a default setting.  If you don't require check out, then turn that off in the Versioning Settings. 

As for workflow, SPD does have built-in activities for checking in a file if you want to do that.