ok is this normal usally i fly the 737 and the 757 but i have a 747-400 at 300 for speed and at 15 thousand feet she dont sit level at all does tilts up some but when i put flaps down to 1 then she levels off so does this mean i have to fly with flaps down to position 1 while i am at the speed the whole rest of the flight or no? is there a setting off or something.

Have you checked your trim settings on the throttle? This should be set before TO or you can sometimes adjust it on your joystick/yoke

on my trip they do sit a little low so i guess in order to sit level in flight the trim has to be level ?

You need to always trim, change pitch >trim, change power> trim

When you say it tilts up, I'm guessing you mean it can maintain altitude, but the nose is pitched up a little bit? Some degree of nose-up pitch is normal in level flight.

it does stay at level flight and yes the nose does pitch up about 10 degrees i tryied the trim and it will lower then it rides right back up again

Ten degrees sounds a bit excessive. What's your weight and balance like.

It could be helpful if you said about which plane in which sim you're talking about in particular. The default FSX 744 for one has some very strage FDE that causes a similar behavior, that was  fixed by some guy ba adding "virtual flaps" in order to keep a more realistic pitch in level flight.

this is the new american airlines 747 400 i just dowladed

Downloaded from where and for what model. Meljet? Project Opensky? Default? PMDG? iFly? AI Aardvark?

Which aircraft?? default, PMDG ?? For PMDG make sure you're using the load manager to properly set up your fuel, pax, cargo loads. Your CG might be out of the correct range depending how you have that configured. I wouldn't use the native Fsx loading tool for that particular aircraft.

sorry about that miss read it it is PROJECT OPENSKY BOEING 747-400 Passenger V4