If you’re like me not a great UI guru nor a brilliant Picasso you have to check this out. Balsamiq Mockups is an online tool where you can create mockups of screens super easily.  I am convinced this tool is worth every penny of it.

To get some idea, I’ve made this mockup in less than 5 minutes.

Check it out at http://www.balsamiq.com/products/mockups  You can try it for free, it just comes up with a reminder dialog every now and then.