right, thanks for your advice, especially nav.
this is what ive done:
ive set up the gps to guide me to the point where i should start my approach (added waypoints). once ive got to that point i'll take off the autopilot, add the flaps to about 3 or 4 notches (737), set the trim, maintain steady speed and rate of descent, and fly the aircraft a little to one side. when im nearering the runway with the aircraft all ready, (full flaps addeed, gear down, trim correct, auto brakes armed) ill just send the airplane a little to which ever direction i need so its aligned with the runway, once ive done that ill flare and touch down at around 120 knots, after that its easy enough to bring the aircraft to a halt.
i think my main problem was being too drastic in the approach, and focusing too much on the runway(by the way, when you say the runway has to be in the centre of the windscreen, do u mean the centre of my monitor, or in the middle of the left panel, or what, please cud someone clear this up, thanks). ive tried to focus on better descents, and mainting a more consistent speed and altitude. ive also done a few calculations before hand working out optimum speeds and suitable descent rates.
my landings arent perfect, but i think their getting better. (thanks to everyone for their advice

) ill keep posting on this thread saying how im doing, and hopefully u guys can help me with any other little problems i have

p.s, is it worth setting my joystick to be less sensitive. as it is now, the way i fiddle with the joystick, the airplanes forever going left right and centre.
another point, could someone please just go over how best to use trim on landing

last point, please could someone send me a flight video of their perfect landing :P

. That'll be most helpful

lol looks like im making yet another point, i just wondered if real pilots will land full manual, or they have loads of automatic aids to keep them lined up with the runway and maintaining a steady rate of descent.
maybe ill post some screenshots later, anyway thanks again everyone

will