Disable image upload in posts + replacing WordPress comment function

1. Can I disable the image upload feature to prevent my server from being used up.
2. Can I embed anpress under a WordPress post and replace Wordperss default comment section? Actually I can do that, but when clicking the Ask question button, it goes to the ask question page of Anpress instead of staying in the WordPress post. If there is a way to do that replacement, it would be very useful, particularly to build up the questions and answers base.

Many thanks for your great work. The plugin is awesome!!!