thanks harry for giving me directions

allright my friends i am still getting error after adding httphandler tag in my webconfig

this is my webconfig

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<system.web>
    <!--
            Set compilation debug="true" to insert debugging
            symbols into the compiled page. Because this
            affects performance, set this value to true only
            during development.
        -->
    <httpHandlers>
        <add verb="GET" path="FtbWebResource.axd" type="FreeTextBoxControls.AssemblyResourceHandler, FreeTextBox" />
    </httpHandlers>

    <compilation debug="true" strict="false" explicit="true"/>
    <pages>

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this is my aspx page source:

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This is the design view of my aspx page

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this is the error that i am getting after running the page

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Could not load file or assembly 'FreeTextBox' or one of its dependencies. The system cannot find the file specified.

Source Error:

Line 32:         -->

Line 33:     <httpHandlers>

Line 34:         <add verb="GET" path="FtbWebResource.axd" />

Line 35:     </httpHandlers>

Line 36: 

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Please guide me my friends...Please HELP