CAML query with a filter between DateTime's

SPQuery query = new SPQuery();

query.Query = "<Where><And><Geq><FieldRef Name="Created" /><Value Type="DateTime" IncludeTimeValue='FALSE'>" + SPUtility.CreateISO8601DateTimeFromSystemDateTime(ddtStartDate) + "</Value></Geq>" +

"<Leq><FieldRef Name="Created" /><Value Type="DateTime" IncludeTimeValue='FALSE'>" +

SPUtility.CreateISO8601DateTimeFromSystemDateTime(ddtEndDate) + "</Value></Leq></And></Where>";

SPListItemCollection collection = list.GetItems(query);<Query>

<Where> <Eq> <FieldRef Name="CatalogItem" LookupValue="TRUE" /> <Value Type="Lookup">Value Goes Here</Value> </Eq> </Where> </Query> <where> <eq> <fieldref name="PersonFieldName"/> <value type="User">User Display Name</value> </eq> </where>