Might want to take a look at liquidity first: http://www.cme.com/html.wrap/wrappedpages/end_of_day/daily_settlement_prices/rmb.html?h=1 10/23/07 volume = 1 (one) 10/24/07 volume = 61 Open interest = 343 Maybe OK for investing (but with the added hassle and spread cost of monthly rollovers), not for trading. Oanda would be a far better and less expensive alternative.
EverBank might be what you are looking for: http://www.everbank.com/001WorldCurrencyAccess.aspx?LinkID=Body1