I am majoring in Computer Science and I am working on my senior project.

This will be my final year in school, and I will begin working my senior project this semester. I am enrolled in a software engineering class, and it will take two semesters to complete the project. I will be working in a group as well. I am having a hard time coming up with an idea. I have to work with ASP.net and SQL Server to create the website. My group is supposed to create a professional website. Does anyone have any ideas? Any help would be greatly appreciated.