How to change php to seo friendly

I recently migrated from an old blog to a new one. I would like to keep the same url which is just my websitename/blog. The new one's path is index.php?route=blog/home , how can I change that to /blog ? The rest of my site is seo friendly urls. Also, the pages have been indexed by search engines and I want them to remain the same.

The Extensions button top right (on this page) will take you to fee and free extensions. Ask it for "pretty URLs" to find one, if it is still there under that name. Ask it for URLs to find more stuff. The problem is cosmetic. You can avoid it such as by hard coding the link to <A HREF="where/blog">Blog</A> (or the like), or by using an extension.