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I'm new is SharePoint and struggling with adding web part. I'm using WSS 3.0. I want to add Excel Web Access Web Part, so I go to site Actions -> Web Part Gallery and try to upload .wdp file which looks like that.

    <WebPart xmlns="">
  <Assembly>Microsoft.Office.Excel.WebUI, Version=, Culture=neutral, PublicKeyToken=71e9bce111e9429c</Assembly>
  <Title>Excel Web Access</Title>
  <Description>Use the Excel Web Access to interact with an Excel workbook as a Web page.</Description>

After I uploaded web part, still couldn't use it. When I clicked on uploaded file, it says:

Cannot import this Web Part.

Is Anything I'm doing wrong or not doing?

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you still need: 1. Microsoft.Office.Excel.WebUI in GAC 2. Microsoft.Office.Excel.WebUI namespace in SafeControls (WebConfig) 3. ewr023.gif in 14\IMAGES folder

and as far as I remember there should be installer for EWA which can do all the stuff for you

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