Sidebar now appears at bottom of blog

I am in the process of cutting and pasting entries from an old blog into a new WordPress blog. There is no other way to transfer my content. Of course, funky things showed up in my first entry, so I went into HTML and deleted code that was adding stuff that wasn’t ever meant to be. Inadvertently, I deleted SOMETHING important and moved my entire sidebar below my posts. Now, you have to scroll down past my posts to see what should be on the right-hand side. I’m giving “Paisley” a try, and that’s the theme I have screwed up, if that matters.

If you can help me out here, I’d appreciate it.

I’m thinking it might just be easier to go find another theme with similar features.