Bonjour!
I have previously made software like this in the past, and I can do this project efficiently and on time. I will use the Internet Explorer 10 ActiveX control, or the Google Chrome webkit control. For blocking keystrokes, I will use the global Windows keyhook API, which disables most global keystrokes. However, in the case of Ctrl-Alt-Delete, I can create a script which removes all the options from the Ctrl-Alt-Delete screen.
For the admin tools and configuration, I plan to implement a secret keystroke which opens a password-protected dialog box, where the administrator can close the browser, and perform other options.
I have 2+ years of experience in .NET and C#, and while I am new to this website, I will promise to deliver a good-quality product.
Finally, if you have any more queries, please do not hesitate to contact me.
Thanks,
Joe