SQL Database Questions/Problems

Hey all.

I love wordpress, but have come up with a problem. I am a relatively new user. I understand Database structures, but I am not an SQL or database wizard by any stretch.

I upgraded my blog to 2.71 (manually as Yahoo still hasn’t set it up) and all went well except my catagories function doesn’t allow me to add new categories, etc.

I added the phpmyadmin plugin so I could take a look at the database. My wp_term_relationships and wp_term_taxonomy tables are both damaged.

MySQL said: Documentation
#1016 – Can’t open file: ‘wp_term_taxonomy.MYI’ (errno: 145)

Is there an easy way to rebuild, these two tables, or re-install a new database and import all my other tables, etc into it ??

Help would be muchly appreciated.

Thanks in advance.

The site is http://www.homeinsulators.com if that helps.