Thanks for the suggestion with the scroll, I use it now and it's way better than stretching the whole page. If anyone know how to break a word in a comment if it's longer than x, then please reply me the answer.
You know where to find the input text box in source codes for comment subject/title input box? There's a limit for username and password length in the Login module, so I think it's possible to do the same trick for the subject/title in comments. I don't want users to make unlimited titles for their comments.
Thank you again for using some of your time on this. I really hope to find solutions for my needs soon.