financial management system

I need to build financial management system using .net (vb) and mssql2005 this system should be kept simple, create 3 roles: manager, agent , and members to login (username and password). system will show funds(pricing) in this format: entry pricing (entry date), last day's price, % (profit), today's price, % (profit) that's it. I'd also prefer someone that already did similar system and write in (ASP.NET and MSSQL 2005) let me know if you have any questions.