How to Dispute Credit Report Errors, a page from the Federal Trade Commision. Mostly linking for the names, addresses and phone numbers of the three major national credit bureaus (Equifax, Experian, and Trans Union).

P.S. Hooray for Google for managing to list all of these pages in the top 10 results for a search for "credit report". I expected a pile of junk insurmountable even by Google, but this is what PageRank does best.