Yes RicardoOteiza, I see the problem.
The only solution here is to reduce length/height, but use the whole width of your screen.
You can do that by changing the <p> tags into <p style="width: auto !important;">
This is what I got from joomfreak.
Additionally you can insert a table e.g. 1x1 cell with a desired width if you don't want to use the full with of the page.
Or a 2x1 table if you want to show a picure and text on teh right side.
Good luck.
The problem is : vertical and horizontal scroll bar don't appear in some resolution (it depends the contents,links,...) the template works perfectly on 1024*768 but makes ishues on 800*600 and lower, this because there are no scrolls on the template.