Check the sky forum before you order. Full of complaints, including one of mine!
I have just cancelled my second attempt at ordering, due to contadictory, and frankly untrue 'advice' given out by sky.
I'm sure if you can actually get signed up, its great, but also be aware you need a sky talk phone line now, and that seems to be causing all sorts of problems for people. Some people are waiting months to get broadband activated, after the phone line is changed over, with no end in sight and there is a total lack of communication, other than sky advisors on the forum saying how 'sorry' they are, and how they can only 'apologise'!
sky customer service is probably the worse I have ever had to deal with. If you do phone them, refuse to have them call you back, because they won't, and expect to get the phone put down on you at any time.
For now I would rather stay on my 'up to 8mb' ADSL24 line, and pay more money, thats how bad the experience has been.