Well this worked (not)

but I persevered alone

and found that the problem was that the 360 elite that my sister won in a raffle whilst working for a gaming retailer didn't come with a hard drive...what a load of *****!

So I have now purchased a 120Gb HHD and I have a happy kid.

Thanks guys for all you help, it's great to know that those people in the world who spend their lives avoiding reality have got big hearts and generous natures.

For the first time ever I am thinking thank god I haven't got broadband because it means there is no chance of my kid (or husband) getting involved with xbox live.
saintly mother
