sub sub form as a data entry form

[ramantata]

I am new to Access and VBA, and i am trying to make one database using Office XP, Access 2000 and VBA. it is almost complete but i am stuck at two three places like1. Sir, I have a data entry form say 'D' which is linked to a form 'C' when i click on a button on 'C' form The 'D' Form is getting open and i can fill all the text box available for data entry and if i will press SAVE button on 'D' all the data will be saved in my linked table. upto this every thing is normal but when i link 'C' to anotther form like'B' then the problem starts. i mean to say, i have button on form 'B' to open form'C' and again on form 'C' i have a button to open data entry form 'D'. but if i open the form 'D' from the form 'C' its fine but if i open the form , from the form 'B' to 'C' and further from 'C' to 'D' then data is not getting saved it is fix on the text box of form 'D'. while all other button is working perfectly on form 'D' like Report, Clear, Close etc.