Visual Editor Problems

Hi, i requiere some help, i installed wp 2.7 in spanish and everything was working just fine, but i miss with my fingers on the keyword, i didn’t know what keys did i press, and now, when i am trying to work on a new page, when i center text or an image, the whole template moves to the right, and all the pages show the widgets down, i don’t know what to do, to reverse that effect, when i erase the new page, everything goes back to normal, i aprecciate your advise,thanks.