Item Levels

[bsuguy]

Does anyone know where I can find a guide that tells what the ilevel of all the unique and set items are?

[stephan]

If you mean the level required to equip an item, check the arreat summit.
If you mean to find the best place to find an item, check ATMAs drop calculator.

The ilvl of any item is just dependent on the area it drops, there are no fixed item levels.