Wanna learn?
The sizing margins are easy once you get the hang of it.
There are always 4 numbers:
x, x, x, x
And they link to each side.
left, right, top, bottom (respectively)
Whatever the number is, thats how many pixels are held solid and won't stretch to the side.
So if it went 5, x, x, x
Then 5 pixels would be held to the left and not stretched.
This may be a better guide:
[link]Are you on VC, btw?