.NET客户端应用程序服务生产设置

I am creating a desktop/client application that will be installed on +/- 5 PCs, that will be transacting with a database on a central server machine. This app requires login authentication which I've in past rolled my own (messy, but it worked). Then I thought it would be great to leverage ASP.NET Membership,Roles,Profile...etc..I am creating a desktop/client application that