Uploading large files

I have an existing Classic ASP site which has just been move to a new host. It work on the old host but not on the new one. If I try and upload a file that is 121mg via the admin side of the site it works but if I try one that is 129mg or larger I get "Operation not allowed" How in web.confg do I override the maximum file size. It is iis 8

<configuration>
    <system.webServer>
        <httpErrors errorMode="Detailed" />
        <security>
             <requestFiltering>
                  <requestLimits maxAllowedContentLength="3000000000" />
              </requestFiltering>
      </security>    
    </system.webServer>
    <system.web>
        <customErrors mode="Off" />
        <compilation debug="true" />       
    </system.web>
</configuration>

Is the web.config

I tried adding



    <asp>
       <limits maxRequestEntityAllowed="2000000" />
    </asp>

but that just crashed the site and so did

    <asp>
    </asp>

I presume things have changed in IIS 8 but I can find anything that says what to do for IIS 8





    mlngBytesReceived = Request.TotalBytes


        mbinData = Request.BinaryRead(mlngBytesReceived)

Is where it is failing


Thanks