Modifications to TwentyTen v1.6

Hi, due to malware on my site (www.Alhaderech.com), I was forced to modify my theme (site is now clean) and since I built this site 3 years ago without a child theme many of my slight modifications were lost and I cannot figure them out right now.

I am now using Twenty Ten theme v1.6
1) How do I remove the page titles from appearing on each page?
2) how do i remove the “Leave a reply” comments section from each page?
3) finally, how do I remove “powered by wordpress” from the footer, and add a copyright and our contact information?

I have tried everything I know and it’s not working.

Thanks,
Jeremy