Hi btran,
I don't know about ASP.NET, so this answer might not work for you, but from a Crystal Reports viewpoint the following should work.
What you want to do is "Insert" a "Grand Total..." object into your report. You can do this by clicking on "Insert" and selecting the "Grand Total" option. In the pop-up that appears, select a data field that is in the Detail Section of your report (ie. Name, Account) and choose the "Count" summary option.
I hope that this what you were looking for.
Regards,
When you click on "OK" it'll place your counter in the Report Footer Section of your report.