1. Yes, you can manually change it or use any translation plugins available.
2. Yes, this also can be manually edit by opening the php file that contains the heading.
3. Sure. It would be best if you just use the widget or if you are comfortable with manually editing the sidebar.php, you can do that too.
4. Unfortunately, since this theme has a fixed width layout, make it wider will break the rounded corner background images.

I hope that answered all your questions and please let me know if you need more help using this theme. Thanks.

1) Is it possible to change the language to swedish for this theme? Ex change “comments”(in english) to the swedish translation?
2) Is it possible to edit “latest blog entries” “sponsors” etc (at the top with white text and black background) to something else? E.g “new post”
3) If I want to remove some thing from the right like for instance the ”calender” is that possible without destroying the whole theme ^^?
And lastly, is it possible making the blogplaform wider by x20 without destoroying anything?

And thanks for the awesome theme, this is an awesome web site !