Google Sitemap Web Crawl Errors

[kc412o0yz]

Does anyone know the most efficeint way to correct html errors that are displayed in Google Web Crawl: I have 6 not found and 1 http error I need to fix. Any help would be greatly appreciated

buyandselldallas.com/apartment_rental_request.htm 404 (Not found) [?] Jan 14, 2007
buyandselldallas.com/dallas_buying_home.htm 404 (Not found) [?] Jan 20, 2007
buyandselldallas.com/dallas_highrises.htm 404 (Not found) [?] Jan 20, 2007
buyandselldallas.com/dallas_new_homes.htm 404 (Not found) [?] Jan 20, 2007
buyandselldallas.com/dallas_selling_home.htm 404 (Not found) [?] Jan 20, 2007
buyandselldallas.com/mlsrental 404 (Not found) [?] Jan 14, 2007
buyandselldallas.com/.htm 403 (Forbidden)