table update thru data access pages

[geetharej]

I have a query which is joining 2 tables.i have created a data access pages with this query.In this page the fields and values from one table are retrieved. automatically.but the second tables values the user have to input. So I have set this as the unique table so that this is the table to get updated.But the problem is I can't enter values to the fields of the unique table through the page.It gives me the the error"datasource is read only. i have set the in page properties data entry to true.

please pelase help !!!!!

Gee