When it gets down to heads up in the Ramsgate Grosvenor, they play the Button as the big blind.
On telly (especially the Grand Prix at the Grosvenor Walsall) the Button is the small blind.
I'm not sure, but I think that on most internet sites the Button is the big blind.
Which is it...

Also, does anyone know where I can get a copy of poker rules mainly for Hold-em??