Microsoft project management software used to plan, manage, and communicate a project schedule and other information among workgroup members, project managers, and other stakeholders.
Chris Minerva,
What you are doing wrong is looking for a field called Task Name. The field you want is simply "Name", the "task" is assumed by Project since you are mapping into a task based view.
I'll caution you on something though. In Project all time related data is in minutes, so you will need to express duration and work as minutes in Excel in order for Project to accept your Excel data as intended.
Hope this helps.
John