jdMorgan - 12:20 am on Oct 28, 2009 (gmt 0) Leave the solution in place for many months, if not years. Jim
301 redirect to the correct URLs using a pattern-matching directive such as RedirectMatch or RewriteRule (Apache mod_alias and mod_rewrite, respectively) or a script, or...
Return a 410-Gone status, again using either of those pattern-matching directives or a script.
Leave the solution in place for many months, if not years.