Well ok, fair enough. But at least describe it in detail. Non-web-savvy people is too vague.

The only thing I can think of for "dealing with" your audience is to go and talk to them and listen to what their problems are. If they match your idea of what their problems are, then tell them about your product. Otherwise, build what will solve their problem.

If you're wondering how you will get them online to use your webapp, find out what they use the web already for (email) and use that as a channel to get in. If your audience is people who're not using the web at all, pick another audience.

PS A lot of stuff like this gets posted on HN. If you want to get noticed and useful help, be specific and detailed.