The application will allow people to create their own wordpress blog without having them to download and upload wordpress script files. The app will automatically do these things and after installiation process, people can have their own blog in an very easy way. By making set-up process of WordPress easier, I belive that even a person who has no idea about blogs, can create his/her own with the help of this desktop app.
More Technical Details
The desktop application will be written in Java. The possible problems, I have seen is that downloading latest version of the WordPress could be one problem. And while uploading files to the server, there could be some security problems as well. But, I hope that, at the end of this project, all will be handled with success. You can think this desktop application like a ftp program but customized only for WordPress setup by making the setup more easier.