What Type Of Communication Do You Need To Increase Your Sales?
Make a simple "Contact Us" form with just a few fields (don't ask too much at once), where people can leave their contact information and their question.
In order to keep your communication on top level give a shot to email marketing systems like Aweber or 1ShoppingCart . They can help you to send automatical personalized reminders and newsletters to your customers and keep them up to date about your special offers and events.