Tried last night, the 360 Dashboard (i.e. the menu displayed at startup without a game in the drive) recognises the pen drive and an ipod (sorry, was getting desperate

) and I could indeed navigate the directory structures to view unzipped versions of the option file data I had inserted on them. It wouldn't let me copy across the files though.
After this I started up the game and tried to copy data across that way but the game refused to acknowledge either of these external devices. So no joy with getting the option file over.
The last chance at the moment I think would be an XBox 360 memory card, anyone got one of these babies? I don't, so it's back to strange named Welsh & Senegal squads etc. for me.

Mind you, there's a big consolation in that the black button is in a superb place on the 360 controller (like the ps2 controller) which makes precise shots far easier (I always had a habit of brushing the the pass button accidently on the way to the black button on the Xbox S controller, resulting in a fake shot instead of a precise one, that was blooming annoying!

)