HTML .txt files to Wordpress

Hi all,

I've been searching all day for some kind of decent and obviously free plugin which will allow me to upload a load of articles to my blog. The articles are .txt files with SEO optimized text in them, so in HTML(think H-tags etc).

Is there anyone on this goddamn planet who knows how to properly do this? Thanks!

PS. I have tried HTML Import and TXT as Post plugins, both do not what I require of them.