@ Oxboy: when i first had tinnitus I was given some anti-depressants in a mild does which serve to deaden the nerve endings which does seem to help some.
you should have a scan on your nut to make sure you don’t have a (sounds like acoustic but not sure it is) nuroma – a type of non malignant tumor on you acoustic nerve.
a friend on mines tinnitus was caused by an over build up of calcium on the small bones in her ear. these were replaced with artificial ones and the noise stopped.
chech out the British Tinnitus Ass’n web site which has some useful stuff on it