I am porting a site from an old version of a CMS to a newer version which has different page addressing techniques. I'm unfortunately not very good with htaccess at all.

URL/blog/sublblog/article.html is now simply URL/article.html

Unfortunately, this will destroy any linking programs they have going, and break all the old links. I need a way to use .htaccess say:

if request = /(any subdirectory)/(string).html
then redirect to /(string).html

If that makes any sense.