Hosting Upgrade > Site Errors

My hosting company migrated our account to a new server last night & really effed things up. My site content (articles, images, etc.) are fine but the basic support structure of WP seems to have been hosed. There is code “showing thru” when viewing the site in a browser & I cannot access the admin side of WP at all.

I’ve been a web designer for years but am a relative noob when it comes to WP. I have a local copy of my site & I’m sure I can correct this by uploading that version but I want to make sure I don’t inadvertently screw my content up as well.

If someone could offer some advice on this topic I’d appreciate it! Site URL is below for reference.

http://learnstuffnow.com/wordpress/

Thanks!