i need step by step instructions with orbiter

That's not quite enough info to tell what your problem is. What spacecraft? What are you doing and what is not happening. Normally all you do is press Ctrl+ "+" but some spacecraft require additional settings first. You also might want to try the regular Orbiter forum: http://orbit.m6.net/v2/boardtalk.aspMore people there to help you especially if you are trying to fly a complex orbiter ship such as the DG III or one of the Apollo or Mercury add ons.