problem with silent installation

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hi,
   
              when i try silent installation of postgres using the example
in your website msiexec /i postgresql-8.0.0-rc1-int.msi  /qr
INTERNALLAUNCH=1 ADDLOCAL=server,psql,docs SERVICEDOMAIN="%COMPUTERNAME%"
        SERVICEPASSWORD="SecretWindowsPassword123"
SUPERPASSWORD="VerySecret" BASEDIR="c:\postgres"  i get an error telling
that installation package could not be opened.
      please reply immediately.

       
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<div>hi,</div>  <div>&nbsp;</div> 
<div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
when i try silent installation of postgres using the example in your
website&nbsp;msiexec /i postgresql-8.0.0-rc1-int.msi&nbsp; /qr
INTERNALLAUNCH=1 ADDLOCAL=server,psql,docs
SERVICEDOMAIN="%COMPUTERNAME%"<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
SERVICEPASSWORD="SecretWindowsPassword123" SUPERPASSWORD="VerySecret"
BASEDIR="c:\postgres"&nbsp; i get an error telling that installation
package could not be opened.</div>  <div>&nbsp;&nbsp;&nbsp; please reply
immediately.</div><p>&#32;


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