The latest Windows wallet is available for download.
This version includes additional checkpoints.

Download

Windows QT wallet (0.8.99.12 2014-07-21)
https://www.dropbox.com/s/s3djb9j5krf94ap/spectrumcoin-20140721.zip
https://mega.co.nz/#!IsQwkSgS!yTfGa6fL-eKTrqLo1NImMdMC46VcNLLP99G5LAFcD64

Github source
https://github.com/spectrumcoin/spectrumcoin