correct, however you may be able to successfully pool mine one of the newer cpu only sha3 coins, most are forked from quark, an example would be MetaCoin.
http://zcoins.org:9842/ seems to be a pool for only sha3 cpu coins, so probably a good place to start.
47 MH/s is not likely to pay for the electricity. Even if it did, it certainly wouldn't pay for your time. At the current difficulty, 47 MH/s will mine about 0.00001 BTC per day. That's less than a penny per day.
I agree with InsanityDev. Your only option is to mine a CPU-only alt coin.