Ok, after 5 days solid, 5 PCs (bought a new one just because I was losing it) and 3 PCI to SATA cards I finally flashed the 78fk.
This may appear daft but I think it was all because I was not grounding the PC to the 360 chassis

(no comments required, I know I am a numpty for not doing this first

), I just could get the drive recognised until I did it.
Once I grounded it, everything worked smoothely.....
Card i used in the end was a VIA VT6421L (the VIA VT6421a just caused the PC to hang, and the ALI chipset caused the PC to freeze.
Thankyou all for the endless anoutn of info.
Maxed
