ReportViewer: Grouping / Repeating Table?

Question

I'm not quite sure how to do this. I went to the resource: http://www.gotreportviewer.com/, but I couldn't find the exact answer. I'm using VS 2010 .NET Framework 4, so I assume I'm also using ReportViewer2008. Oh, and I am using RDLC files.

They showed a table example where the data was grouped/sorted and they had Group Header and Group Footer's, which seems to be what I want (I think), but I can't figure out how to add those rows to my table.

Basically I have an Object (Registration) which contains:

• Group Name
• First Name
• Last Name

I pass in an ObservableCollection as the Object DataSource. What I want to do is this:

[GroupName]
 [First Name] [LastName]
Total: ##
...
Grand Total: ##

Basically, sort by: GroupName, then FirstName, then LastName. I think the way I need my data grouped/sorted is self-explanatory. I have the sorting down pact, but I can't filter/repeat the data. And, I'm not sure how to get Total / Grand Total. I'm sure I could figure out Grand Total, but Total... I have no idea.