Why QTP 9.1 does not identify rows/cols in datagrid control?

In my application i need to enter some data in a webEdit, after submiting the data displayed in adatagrid . Now I need to verify whether the entered data is displayed in the datagrid or not. Here i am facing the problem the in the datagrid it dose not identify rows/cols in fact it detects the grid as a whole. so how can i verify one particular item in the grid? can anybody please help me ?