Find the post you want to change, then

You go to the end of the url and take the page_post... (after a t., but don't take the t. )
Now, deleting them.
http://www.gaiaonline.com/forum/delete/post/44965657_244*
Can be tailored to edit any post as well.
http://www.gaiaonline.com/forum/compose/entry/44965657_244/