I'm dumbfounded on how to "change" a listing.

I have shut down my old site www.coreysilk.com and have
allowed another to use the IP address of 208.3.70.30.
The new listing is www.thurow.us. This site is a campaign
site for a local election. Can you folks help get Corey Silk deleted and list the newer site.?

I'd be baffled, too, if I had to delist a listing that never existed -- and, so far as I can tell, that is the only kind of listing coreysilk.com has ever had.

As for IP addresses, we don't list by them anyway. That way you can change your host or your server, and our listing still applies.

As for the other site (an election campaign site?), just submit it to the appropriate regional category. Regional categories, and election categories, are usually tended fairly aggressively by the Nation- and State-level regional editors, even if there is no nearer editor.

This is the same problem you had before. Reread what was said in that thread -- it wasn't an ODP issue back then and isn't one now.