What skateboard should I get?

I’m buying a board for the first time (haven’t been skating very long at all, all I can do is literally skate without falling off but that’s because I’ve been using friends’ boards).
I’m buying a board over the internet since there are NO skate shops or anything near me and my mum won’t let me use ebay so I’m buying on amazon. Also the board has to be pretty cheap and I don’t really care about makes or brands or anything.

Basically I’m torn between two boards because I don’t know what size board I need to get (7 inches or 8 inches??):

http://www.amazon.co.uk/Osprey-Pro-Skateboard-Metal-Gear/dp/B001FA355Q/ref=sr_1_18?ie=UTF8&s=kitchen&qid=1245568899&sr=1-18

and

http://www.amazon.co.uk/JACKSONS-LEISURE-SUPPLIES-LTD-Skateboard/dp/B000Y9RZI2/ref=sr_1_3?ie=UTF8&s=kitchen&qid=1245568844&sr=1-3

If any of this information helps; I’m a girl, I’m 5"3.5 and my shoe size is 6 (UK size).

Ok DO NOT buy either of these boards they are cheap rubbish and will not help you at all!!! There really is no point buying a board like this as the trucks are rubbish the wheels and bearings will not let you get any sort of roll and the deck will not give you any pop. These boards really are just for young kids. Yur best bet is always a skate shop if you can travel (maybe ask your parents to drive you to one?). If this really is not an option go to a spacific skate website (check out skate mags like Sidewalk and Kingpin for the best ones with the best deals) as they will have all the propper gear, you can buy a complete set up reasonably cheap. You will get so much more enjoyment from a decent set up. As for size maybe start with an 8 inch board as the deck has a wider surface it will be eisier for you to get used to and learn on after that its personal chioce. I use an 8 inch deck but some of my friends ride 7 3/4 OR 7 1/2 inch decks. I hope this helps.