My parents are on Cox's Northern Virginia cable service. I looked through their online support and was unable to find information on setting up IMAP servers in OE6. Do any of you have any experience with this?

I should also ask about IMAP. I gather that it is basically a way to download email while leaving a copy on the server. This is what I'm wanting since I set up a second computer in my parent's home for my mom to check and send email on. They don't want to get a second email address. Am I correct in trying to set up their computers to use IMAP instead?
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Matt