Problem with my installation

So I’m not quite a novice when it comes to wordpress but I’m certainly not a pro, and that is now showing after trying to do something that seemed simple.

So I was messing around with some of the discussion options and everything was fine, until I attempted to change the url from wp to blog (at least I think it started here). From there everything has gone haywire.

I can still get to a “login” screen and I say that because it’s one of those “the coding is messed up” looking screens. I have since gone into cPanel and uploaded new .php files for all the discussion files but its still not updating or changing. I’m hoping I haven’t gone to far at this point.

Here is a link to my blog site, as you can see it’s clearly not working well. Typing in wp/wp-login.php tells me it can’t find my site, and if I try blog or anything else I can’t get to the dashboard. I’m at a total loss and am freaking out that I fully blew it here. Someone please help, and if you need any clarification please let me know.

Thanks