Then what do I do with it?...
E-mail it to the original poster and see what he says or, submit it as the original tab with the corrections as me as a co-author?...
Because what corrections I do have for a couple of the tabs here ARE needed...
Well I'd suggest the second one, but you can't submit it yourself without making yourself the author. Maybe you should correct it, send it to the author, and get him to resubmit it with you as co-author.