tapsemi

I am planning to write a small program that will allow me to store username, password, website name information. I know there are tons of freeeware/shareware out there but I want to create it my way and then later make it free for distribution. I want to create it this way: There should 3 buttons: to create a new entry, to modify an entry and to delete an entry. I know C and Perl programming only and I have never done a GUI application. Does anyone know how to get started and want is the easiest way to create such a piece of software to run on Windows PC. I know encryption will be an issue, but I will handle it later. Thanks.