You'll probably want https://git.dero.io/DeroProject/atlantis/src/master/dero_windows_amd64.zip (64 bit).

There are instructions for setting up a wallet at https://forum.dero.io/t/create-backup-restore-dero-wallet-in-one-minute/110

(If you find the sync to be too slow, you can speed it up by putting the file at http://seeds.dero.io/atlantis/atlantisDB/derod_database.db in the "mainnet" folder created by the daemon when you first run it. You'll need to complete the sync by running the daemon after doing so, nonetheless.)