Cleaning a Wedding Dress at Home?

I need help! I recently took my wedding gown to the dry cleaners and they told me my dress had too much bead work to be dry cleaned there and that the colour may run and ruin the white. They showed me what they were going to put it in and it looked like a glorified front loader washing machine. I need to wear the dress again for a parade in two weeks and am unsure how to get it clean!

By Alice