Score 1 point for every Yes answer. Email can and should be made critical to your business. Email does not work if half your company has it, and the other half doesn't. If you can use email well, you will find that you are not only able to communicate better and faster, but that your communications costs will come down. The Internet is today the primary source of news and business information.
Internet access is important for having people exposed to new ideas and developments.
For example, your marketing department can use it source customers in international markets by visiting their websites and writing to them. The website is your public face to the world. It is like being able to publish your own newspaper. Think of it as being your global office. Give it as much importance.