HOW TO WRITE A SUBQUERY FOR SELECTING A RECORD AND FOR INSERTING AND FOR UPDATING THE RECORD IN DATABASE IN WINDOWS FORMS

HI First of all happy new year to every one.

I am working on a windows application i want to select a record from the database  that table contains nearly 90 columns now i want to select a record from that table  now i want to insert the seelcted record in a new row in the same table.My windows form contains  8 text boxes and in that i want to update 4 columns in the newly inserted record by taking the 4 values from the 4 textboxes fields in the form.I was stucked at this point. Can anyone help me how to write a perfect query in my windows form code.

Thanks and Regards,

Dileep.K