<div>Dear users:</div>  <div>I want to know how to fix the com of the group in the pull or afm simulation,Please give some ideas.</div><BR><BR><br><a rel="nofollow" class="plink" target="_blank" href="http://cn.webmessenger.yahoo.com/index.php?t=1&to=eWlkPXpoYW94aWl0YzIwMDI-&sig=703fa929658518b2720b087c59cd85f2dabf8844 "><img class="pimg" style="" alt="4" src="http://opi.yahoo.com/online?u=zhaoxiitc2002&t=4&l=cn" border="0"></a><p>&#32;


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