No! Do not do this! SharePoint WSS 3.0 used crappy CM, so Microsoft's best practice was to use MS ECM together. Since 2007, MS has built the CM platform in SharePoint. You will have a very difficult time deleting the MS ECM and including something else in it. In addition, Interwoven is not a first quarter product. If you use it in your company, start moving away from it. OpenText and MS offer much better solutions.
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