For those who cant download the CACHE client from Mega, I have the v5.0.0.0 windows qt located here:

http://www.chainbrowser.com/qt/CACHeCoin.zip

I would also stay away from Cryptsy when buying/selling cache.  The market is being manipulated via bots and makes it impossible to see the true buy and sell orders.  Poloniex seems to be doing a much better job at keeping things under control.

https://poloniex.com/exchange/BTC_CACH