First of all i just like to say thank you very much to everyone i didn't think i'd get so much help full responses.
Tinstaafl,
Thanks,
Basically is fair to say you just chace the ADF needle?
Say Eg, if want to intercept 150 deeg indound and A/C hdg is 090 then i'll turn right on heading of 170 untill the ADF needle drops is that right??
LTP