You can dry them in silica beads. You can buy them from a craft store in the floral section.
Hi Oneta, here's a Youtube video that might help
Here is some good information - for more than just roses!
From the site:
Here are eight methods for preserving those precious flowers. You will have to determine which one will work best for your situation. Your situation depends on the type of flowers you are trying to preserve and where you want to display the flowers.
They use silica gel.....you can get kits at Michaels or Hobby Lobby or just hang upside down .. let dry.
I tie a string or ribbon around and hang suspended upside down. Once it is completely dry, then you can place where you want to display.
Put them in a vase with no water