Please help me about this erro.

[Pawan Sugandhi]

Server Error in '/techapp' Application.
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Retrieving the COM class factory for component with CLSID
{000209FF-0000-0000-C000-000000000046} failed due to the following
error: 80070005.
Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.

Exception Details: System.UnauthorizedAccessException: Retrieving the
COM class factory for component with CLSID {000209FF-0000-0000-
C000-000000000046} failed due to the following error: 80070005.

ASP.NET is not authorized to access the requested resource. Consider
granting access rights to the resource to the ASP.NET request
identity. ASP.NET has a base process identity (typically {MACHINE}
\ASPNET on IIS 5 or Network Service on IIS 6) that is used if the
application is not impersonating. If the application is impersonating
via <identity impersonate="true"/>, the identity will be the anonymous
user (typically IUSR_MACHINENAME) or the authenticated request user.

To grant ASP.NET access to a file, right-click the file in Explorer,
choose "Properties" and select the Security tab. Click "Add" to add
the appropriate user or group. Highlight the ASP.NET account, and
check the boxes for the desired access.

Source Error:

An unhandled exception was generated during the execution of the
current web request. Information regarding the origin and location of
the exception can be identified using the exception stack trace
below.

Stack Trace:


[UnauthorizedAccessException: Retrieving the COM class factory for
component with CLSID {000209FF-0000-0000-C000-000000000046} failed due
to the following error: 80070005.]
_Default.Button1_Click(Object sender, EventArgs e) +24
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111
System.Web.UI.WebControls.Button.RaisePostBackEvent(String
eventArgument) +110

System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String
eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
+36
System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
+1565




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Version Information: Microsoft .NET Framework Version:2.0.50727.3625;
ASP.NET Version:2.0.50727.3618