Moving URLs

Hi there, I have an issue which is probably quite easy to solve but I’m not sure how to do it. I have a WordPress blog – http://www.mysite.com which I have recently moved to http://www.mysite.com/blog/ because now http://www.mysite.com is a static html page. This is all fine but the issue I’m experiencing is that the internal blog posts urls have all changed to http://www.mysite.com/blog/my-post/ I would prefer them to stay as what they previously were – http://www.mysite.com/my-post/ If this isn’t possible I need to redirect all old post urls to the new ones but I’m not sure how to do this. Can anyone help me?

Thanks in advance!