Hi, depends what sort of noise, low or no gearbox oil, worn gear linkage (gear stick to g/box), worn or poorly adjusted clutch (gear crunching), worn out gearbox (get one from scrappy) not dis-engaging clutch fully etc etc.take it to a mechanic for a check? good luck.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.