Deborah,
I planted these last year and LOVED them (although I planted them too late, so they didn't come out as great as they could have). Anyway, the package that I had said to store them in sand and re-plant again in the spring. I can't say that I've had success with this because mine spent this growing season still in the sand in the corner of my garage (an experiment, if you will) because I wanted to try tulips instead this year.
Anyway, I don't know if that helps, but the sand method is what the instructions on my package of Peruvian Daffodils said to do. :)
- DnD