Hi Sarah,
Firstly well done on starting - you are on the way to a new exciting new body.
As for the bars/shakes etc they are a bit of accquired taste but believe they are one of the better tasting of the VLCD's around. If you think the Choc/Orange bar is awful then dont try the Lipotrim ones -they are like eating folded cardboard - but you do get used to them eventually.
Maybe it would have better to start with a shake - to which you can add tablet sweetners, coffee, mint tea etc to make them taste nicer.
Stick with it as it is worth the effort. Its hard and you will have side effects such as headaches - drink plenty of water, feeling cold - have lots of hot sweet decaff coffee, and boredom -but this will be counteracted by the increased energy you will have and most people end up with the cleanest house ever !! lol.
Come on here for many tips and advice or just for a moan - we have all been there and know exactly what you are going through.
Keep going and I promise you if you stick to it you will be amazed at the weigh ins.