Forum Accidently moved forum into "forum" folder. Now google search links are broke... HELP
 

Is there a way to redirect the broken links that search engines have in their databases? robot.txt?
While preparing backups and setting vb up for the upgrade to vb 4.07 and to move the forum into the "forum" folder, I accidentally hit the move button rather than copy. It was part of the plan for the future but, not now :( I can simply move it back but, would like to know if there is a way to fix this through robot.txt or another way?

If robot.txt is the answer, could someone tell me what the line should say... please