Redirection of HTTP request

[Gene Grimm]

We are a small local ISP with a mixture of Linux servers and an NT server. Most 
of
our client web pages are currently hosted on the NT box. All of our email is
hosted by our main Linux box. How should an HTTP request to site labeled
domain.com be properly redirected to www.domain.com.
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http://www.networksonline.com/service.htm
ICQ #58278887