Report tabs in Crystal Report Viewer

I'm working with VB.NET 2005 and Crystal Report 2008. On my form I added a CrystalReportViewer for viewing the reports. When I view the main report, there's a "Main report" tab shown under the toolbar. When I drill down on a sub-report, a sub-report is displayed on another tab. Looks like there's an internal Tab control in the CrystalReportViewer for displaying different report views (main report, sub reports).

The problem is, I disabled the drill down property of sub-reports, so only one view of my report, i.e. the main report will be displayed. Is there a way to "hide" this Tab control on the CrystalReportViewer? My users find this "Main Report" tab un-necessay and want to get rid of it.

I tried not showing the Toolbar and the Status bar, but it didn't help.

Your help is much appreciated. Thanks.