Think ya gotta put them in the freezer for a few months for some reason ???
Simulate a long winter maybe ?
No...place acorns in the fridge but NEVER in the freezer if you are not going to plant them right away.
Try not to let them dry out.
Here's a link to properly germinate and plant acorns...
http://forestry.about.com/od/treeplanting/p/oak_acorn.htm