SQL Server Reporting Sercices (SSRS) is a good reporting option, especially as you can run it for free on top of SQL Express. But it might be a bit of overkill if all you want is one or two simple reprots which will not change.
ASPX In that case it would be relatively simple to have an aspx page that contains either a gridview or listview which you bind your data in to, or you could just generate an HTML page with the data formatted in to a table. The reason why i mention doing it in an aspx or web page is that it simplifies your printing and display options.
Other Tools Of course there are other reporting toolsets out there which you should check out, but invariably they will add extra dependencies or complexities to your application.