i signed up for bt infinity. as part of the order process i was asked if I wanted to add the dual band dongle, as it was recommended for older laptops/pcs.
all connected up today, tried to use the dongle, only to find that its not compatible with windows xp!
so stuck with a useless dongle unless i buy a new laptop or pc. surely a newer windows 7/8 laptop will be compatible with dual band anyway?