noise when drivin from n/s.

[ben00]

help help. hi ther all i have a 2001. 1.6 focus zetec and i have a very anoying noise from the n/s/f sounds like a wheel bearing noise but there is no play in it as well i have replaced the gear box thinking that the diff inside was on its way out also replaced the drive shaft thinkin it was the trypod on the end cant think wot els it could be thinking of replacin the bearin juat to see if it might help. o and i have got 17" wheel but its neva happend befor any segestions would be good thanks .help need to. no soon due to goin to nottingham thanks soon soooo... help help