Icons for a new Windows application

For a new Windows Application, I need some icons. The app is a simple invoicing system, called Turbo Invoicer, and I need this icons: - Main app icon - Invoices button - Customers button - Products button - Groups of products button - Configuration button - Exit button Icons must have Windows 7 style. Original sources (vectorial files) must be delivered. Please submit your proposals with watermarks. Bids without sample proposals won't be accepted.