The „Terms and Conditions“ page is in English and may not matches to the „terms and Conditions“ you have in Mind for your Hot-Spot.
Create a copy of /etc/chilli/www/terms.tmpl
e.g.
cp -p /etc/chilli/www/terms.tmpl /etc/chilli/www/orig_terms.tmpl
and start editing /etc/chilli/www/terms.tmpl
e.g.
vi /etc/chilli/www/terms.tmpl
If you do not like the login-Page at all, here is a tutorial to change as you like (Not tested from my site)
http://www.coova.org/node/80