can you mirror force when he attacks? because the text says IF he attacks... if its being negatd then he doesnt attack...right?

No they cannot, here's why:

"..If this card attacks, your opponent cannot activate any Spell or Trap Cards until the end of the Damage Step."

See, he is declaring an attack, therefore they cannot activate any S/T. Hope this helps.

You're reading the old text for Mirror Force. It's been errata'ed since then...

You can only activate this card when your opponent's monster declares an attack. Destroy all Attack Position monsters on your opponent's side of the field.

Good thing they did cause I was getting SICK of people saying Lord of D. and King Dragun protected Dragon's from it.

Correct You Cannot Sorry Kyle It Has Been Eratta'ed Ok .