We have a client who manufacturers small tires. They need a B2B website for their dealers and downline. The shopping cart does not need to take credit card numbers. The back end should include functionality standard in a sales organization. This would include email, calendar, meetings and contacts. The B2B website needs to export data to Great Plains accounting.
Please provide examples of your best B2B site. Prefer ASP or ASP.NET but will consider others.