DC checks on Cursed items

[banelilith]

Ok I'm a new DM and I need a little help with the rules on DC checks for cursed items, I'm running a Dungeon and it will have some cursed items.
they are:
-Bracers of Defenselessness
-Crystal Hypnosis Ball
-Ring of Clumsiness

So there should be 2 DCs right? One for what they think it is (like for the Bracers they should think it is one of +5), and one for actually knowing its cursed property.
So what should these DCs be about?

Also they would need a high spellcraft check to do the DC right?
And Appraise will not work, but how does an identify spell for or an object that identifies magic item work?

I just want to make sure I do this right.

 

[frankthedm]

Until a character is epic, it take magic to identify magic items.

Cursed Items :: d20srd.org
A simple detect magic spell yields a misleading aura and strength, often indicating that the item is a noncursed item of similar sort. An identify spell only has a 1% chance per caster level to reveal a cursed item’s true properties, including the cursed aspect. Analyze dweomer reveals the true nature of a cursed item.