jQuery Grid Plugin - jqGrid

Hello - need some help - code below:

    <script type="text/javascript">
    
    jQuery(document).ready(function(){
      jQuery("#list").jqGrid({
        url:'../lib/services.php?cmd=GetMembers&groupID=1',
        datatype: 'json',
        jsonReader : {
            root:"data",
            page:"currpage",
            total:"totalpages",
            records:"totalrecords"
            },
        mtype: 'POST',
        colNames:['lastName','firstName', 'name','email'],
        colModel :[
          {name:'lastName', label:'lastName', width:150, sortable:false},
          {name:'firstName', label:'firstName', width:150, sortable:false},
          {name:'name', label:'name', width:150, sortable:false},
          {name:'email', label:'email', width:200, sortable:false}
        ],
        pager: '#pager',
        rowNum:10,
        rowList:[10,20,30],
        sortname: 'ordinal',
        sortorder: 'desc',
        viewrecords: true,
        caption: 'Hire Americas Heroes Members'
      });
    });
    </script>

and the json being fed to the control is as follows (line breaks added for readibility)

{
    totalpages: "1",
    currpage: "1",
    totalrecords: "5",
    data:[
{"id":"1","typeID":"1","lastName":"SomeLastName","firstName":"SomeFirstName","imageName":"mSomeLastName.jpg","email":"mSomeLastName@eml.com","description":"Title Etc","ordinal":"1","name":"Executive Committee"},{"id":"2","typeID":"1","lastName":"SomeLastName","firstName":"SomeFirstName","imageName":"mSomeLastName.jpg","email":"mSomeLastName@eml.com","description":"Title Etc","ordinal":"2","name":"Executive Committee"},{"id":"3","typeID":"1","lastName":"SomeLastName","firstName":"SomeFirstName","imageName":"mSomeLastName.jpg","email":"mSomeLastName@eml.com","description":"Title Etc","ordinal":"3","name":"Executive Committee"},{"id":"4","typeID":"1","lastName":"SomeLastName","firstName":"SomeFirstName","imageName":"mSomeLastName.jpg","email":"mSomeLastName@eml.com","description":"Title Etc","ordinal":"4","name":"Executive Committee"},{"id":"5","typeID":"1","lastName":"SomeLastName","firstName":"SomeFirstName","imageName":"mSomeLastName.jpg","email":"mSomeLastName@eml.com","description":"Title Etc","ordinal":"5","name":"Executive Committee"}
]}

Thanks,