>>Hi
>>I have an asp.net page with Text Box Controls
>>
>>From within C#, I want to make some of these Readonly, and then Read-write
>>
>>So default on the form is that they are Read-only, but if user presses abutton (Go Into Edit Mode) I want to make them ReadOnly = false so
>> thay can be edited
>>
>>Tia
>>Gerard
>
>Can you handle that using Javascript on the client side ?

Handle the Click event of the button and you can set TextBox controls to ReadOnly=true in server side code.