Blog crashed upon Facebook app plugin

My blog crashed when I tried to install the Facebook plugin. I couldn’t login and all I got for my blog was a white screen.

I had Network Solutions restore it back to the day before I installed the plugin, but now it’s even more broken. My password on WordPress is “wrong” but has been the same for years. My homepage is up at http://www.bowsbootsblue.com, but when you click on a link it takes you to pages that don’t exist with URL structures that are not my URL such as: http://0311113.netsolhost.com/WordPress/2012/06/07/compadres/
Where did my files go? Why is my whole blog redirecting to this? Network Solutions claims they are unable to help unless I pay more, even though they caused this.

This is the error message I see on my screen:
404: Page not found
This error is generated when there was no web page with the name you specified at the web site.

Troubleshooting suggestions:

Ensure the page you are linking to exists in the correct folder.

Check your file name for case sensitivity . Index.htm is not the same as index.htm!

Temporarily disable any rewrite rules by renaming your .htaccess file if it exists.