Hi Larry, I don't know which program you are using for your email but if it is Outlook Express, it's a fairly straightforward process. This is what I did when I recently changed my laptop. There may be other ways, and if there are, I'm sure they will be posted - stand by !
Use Explorer to navigate to WINDOWS\Application Data\Microsoft\Address Book and you should see a couple of files named UserMPS.wa~ and UserMPS.wab Copy them to a floppy (if very large you could zip them) and then just copy them back to your new PC in the same directory.
OE does have a facility for export and import of the address book but it seems to asume that you are doing this to Microsoft Exchange. However, there are options for Export/Import as a CSV (Comma Separated Values) which I haven't tried, but may work.
The Export/Import facilities are accessed from the 'File' option on the top Toolbar.

Hope this Helps


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Willum