Here is the rule. The default is that it passes on request parameters.
 
 
        <rule name="Report_Create_Area_Rewrite" stopProcessing="true">
          <match url="^report/create/area/("d+)/?"/>
          <conditions>
            <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true"/>
            <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
          </conditions>
          <action type="Rewrite" url="components/report/create.aspx?areaID={R:1}"/>
        </rule>
 
To make sure the rule was working I tested the URL bellow and that page loaded properly (however uploading was still broken).
 
http://localhost/report/create/area/820/?useless=true


From reading the other posts, my issue seems a bit similar to this one...

http://cutesoft.net/forums/thread/44779.aspx

CT