From D&D Wiki
ranged things look something like this:
Magic Missile Wizard Attack 1 You launch a silvery bolt of force at an enemy. At-Will ✦ Arcane, Force, Implement Standard Action Ranged 20 Target: One creature Attack: Intelligence vs. Reflex Hit: 2d4 + Intelligence modifier force damage. Increase damage to 4d4 + Intelligence modifier at 21st level. Special: This power counts as a ranged basic attack. When a power allows you to make a ranged basic attack, you can use this power.
each one "range" is 1 tile.