This is very cool. Good work.
Is this in C or C#.NET? I ask due to security warnings I get when closing the application for it trying to modify some .NET config files in the .NET system folders. This was alerted to me by the security software I use.
If it is .NET, you could always look at anchoring the text box controls to the left,right and top,bottom to have them stretch with the form during resizing.
RD