I created a new blog, and I'm trying to point my domain at it that I already own. It's giving me a 404 Error. I believe I need to change my nameservers, but I'm not sure how. It says google owns them, but I can't find out how to log into the website to change the nameservers. Failing that, I was going to take the blog back to the original .wordpress.com address, but it's still showing a 404 Error. Help, please!