Just follow the steps to make yourself comfortable using OpenOffice
Lots of people who have moved to OpenOffice don’t like the margin border on OpenOffice.org Writer it can be remove.
If you like to change the default OpenOffice.org document file format, for example, to save document files with Microsoft Office format (.doc), go to Tools ? Options ? (from left menu choose) Load/Save ? General.
Now, from right menu, at Default file format section ? Always save as, choose Microsoft Word 97/2000/XP, or other default format according to your needs.