problems in landing

ok i have been playing flight simulator X for a while now!! i have a problem with the landing.i can taxi,takeoff and fly wherever u want me to in any manner.now the problem is with the approach at the destination. i can see the runway but i cant align myself to the runway properly.i think i turn at the wrong time cos i end up landing parallel to the runway.how do i know wen to turn. also wat are the procedures for the landing.i mean wat should be the speed n the flaps etc.one more thing is i dont have a joystick at the moment and i am using a keyboard for the time being.it gets very difficult to control the aircraft. any suggestions. Please help me out.