Hey i need some help if possible, i'm using adobe fireworks to create websites etc but ive seen that photoshop has soo much more to offer, there are some thing i cant figure out thou.

1st thing is how to change a rectangle: in fireworks you can just adjust the paths to change the shape of a rectangle. anyone know how this is done in photoshop?

2nd thing is corners, in fireworks you have the abbility to round corners afterwards in your desired size, in photoshop i onle seem to be able to create default rounded rectangles, anyway to change that?

ive added a image to explain a bit more.