I just realised something....the ID i gave previously is the Instance ID, the hardware Id stops after 534811D4. Anyway, having said that, I did some searching around and found a vaguely old version of the driver which has less in it and the hardware ID's are a closer match. I changed the subsys ID on one of the hardware Ids and it seems to work ok. If this works I may just leave it like this. Having said that, i have never come across such a driver which is widely regarded as hard to find and troublesome!