Can u please tell me ur project duration, ur team size any and other priorities that u are looking in a project. Here are some more topics for you:
01. E-learning system.
02. Online hotel and Car booking site.
03. Article Hosting system.
04. Expert Solution systems.
05. Online allotment system for school and colleges
ERP stands for Enterprise resource planning , as it's name indicate that's it's a way to integrate data and process. Take an example of sales & marketing scenario in which there is a customer relationship approach, Like a web site where you can buy some products online.
Take it as a container which holds all the information from accounting , distributing to shipping. It is a business management system that integrates all facets of the business, including planning, manufacturing, sales, and marketing The ERP system integrates information, such as order information and financial data. In a sentence i'll say that ERP is not a software although it contains many of them but it's System that integrate them.
Well you told me about your project , tell me how can i help you. I'll give the best of me.