eeeeeekkkkk!
sk880user, try my mantra.....
the transpose button is my friend....the transpose button is my friend

Seriously though Jus I would agree with sk880user in that you should buy the best keyboard your budget will allow. The PSR1000 would be a good place to start and at least that way when you do want to move on to bigger things you might get a half decent return on it. With pro's like Scott Yee and Don M happily using the PSR2000 professionally you could do a lot worse. Also you will find that these mid range boards have many more features for you to get to grips with before you would even start to think of an upgrade.

Whatever you decide I hope that you enjoy making music. You have come to the right place to start and this forum is packed to the rafters with people who will be happy to help you whatever your choice of keyboard eventually is.
Good luck in your choice.
Tony (also in UK)