Microsoft ReportViewer in Sharepoint

I have a creating a .aspx page in VS2008 with a reportviewer control and a .rdlc report file with the data coming from a DataSet.XSD file. This report is connecting to a SQL server.  When i run the page on my development machine everything works great.  But when i place the file in the web directory inside sharepoint it gives me this error:

The control type 'Microsoft.Reporting.WebForms.ReportViewer' is not allowed on this page. The type is not registered as safe.

I added the assembly Microsoft.Reporting.WebForms to the web.config file in the web directory.  I also added the SafeControl tag for the assemly.
 <add assembly="Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />

<SafeControl Assembly="Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" TypeName="*" Safe="True" AllowRemoteDesigner="True"/>
When i added the safecontrol tag the page gives me this error:
This page has encountered a critical error. Contact your system administrator if this problem persists.

Are there other steps i need to do inorder to get the report viewer to work on a sharepoint page??
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MuralidharandAsked:
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MuralidharandConnect With a Mentor Author Commented:
I have added the Reportviewer control in the safe controls and it is started working....
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Ted BouskillSenior Software DeveloperCommented:
Well for one a typical ASP.NET page won't run natively in SharePoint.  Was there a web link that convinced you this would work?
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MuralidharandAuthor Commented:
Please review
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Ted BouskillSenior Software DeveloperCommented:
Be aware that with an upgrade or even update to SharePoint your manual changes to the web.config file can be wiped out.  SharePoint likes to *own* the configuration files and DLL's used in the installation.
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MuralidharandAuthor Commented:
We have to add Reportviewer control in the safe control list in sharepoint web.config file.
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