Internal Server Error 500 Internal Server Error

I’ve read quite a few articles in the codex about this problem but didn’t really find an answer. The tech at Hostgator tells me the problem is there’s nothing in the girlsfootballshirts.com file. He also said he doesn’t think the .htaccess file is correct. My whole subdomain address is girlsfootballshirts.pigskinfanaticblog.com.

The .htaccess code below is the code I was given while I was on the Network Setup page. I then copied and pasted it into the .htaccess file after removing the other code that was in the file.

I copied this code from my .htaccess file:
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]

# uploaded files
RewriteRule ^files/(.+) wp-includes/ms-files.php?file=$1 [L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ – [L]
RewriteRule . index.php [L]
</IfModule>

# END WordPress

Does the .htaccess code look okay to you?
Thanks for your help,
Jim