Hi Roseleen and Anna...and welcome to the Class of 2008!
As you make your way through the many threads you'll find list upon list of things you should consider taking...so please check out those threads.
There are Four key pieces of gear you should take your time deciding on and once you do...make sure they fit and break them and you in properly:
1. Your boots/hiking shoes and socks. Your feet will be your vehicle and if you skimp on purchasing a good pair...it could be painful. When you go to get your boots, try them on with the socks and liners you intend to wear. The socks provide the cushion the liners act as blister protection. If properly fit, as you push your toes to the front of the boot...you should be able to put your thumb "snuggly" into your boot behind the heel. Also, stand on an incline board (the better outdoor shops have them) and make sure that your toes are not scrunched in the front of the boot. Break them in by walking with your pack on and over rolling pathways with a good incline/decline.
2. Your pack. The Camino is not a long distance no facilities walk, there fore you need a pack just large enough to carry the gear you will be taking...plus a little room for a snack...maybe hard sausage and cheese. The pack should have an adjustable waist band that will allow your pack to ride comfortably on your hips and allow the shoulder straps sufficient space where they do not hang on your shoulders. The shoulder straps are meant to help balance your pack...not carry the load.
3 Your wicking clothes. Purchase two good sets of poly-pro (or other wicking material) shirts (one long/one short), a breathable wind jacket and a fleece vest.
Also, two pair of hiking shorts...one can be the type that zip out the legs from the longer pant leg.
4. Sleeping bag. There are many out there. I suggest you find a good down filled 40F bag. This should be fine, especially if you purchase a silk liner. On hot days the silk liner becomes your covering and the bag your pillow.
An outlet to check is:
http://www.rei.com
Buen Camino
Arn