Quick Typo change ways?

Hi guys,
My site was on (M)Social. Now switching it to Quark I have to go though all articles and replace typo codes from old to new ones. So, the question is, is there a way to quckly replace every instance of "big-btn" to "btn-border", "numblocks num-3" to "numblock" and so on on the whole site?
Thanks.

You might try to do a sql query and replace it directly in sql. I think this might be the fastest way, but please do it locally to be secure yourself from any problems.