Should I Start to Buy?

I was surprised by today's fall in US markets - the forecast of an uptrend over the next few days remains intact for the NDX but the SPX entered oversold territory and tomorrow's signal is sell rather than buy - or rather hold your short don't initiate a long. Using my much older "autoregressive model" (the newer model is called the "stochastic model") buy signals have popped up on the weekly charts for the NDX, SPX, and All Ords There is a buy on the daily chart for the NDX (but not for SPX and AORD). Enough Wealth said yesterday that he was going to buy more units in the Colonial First State Geared Share Fund. This is an actively managed levered fund. I've planned to switch money from the Colonial First State Conservative Fund to the Geared Share Fund at some point. I also plan to switch funds in my TIAA-CREF 403b from the Bond Fund to Global Equities. Yesterday, I made the decision to invest more of my Mom's money in stocks (that was only a 4% shift though). So what I am thinking about now is starting a program of gradually making the mutual fund shift, perhaps a quarter of the account each time on the basis that it is possible to market time, but hitting the exact bottom is very hard or impossible. I'll read some more opinion to get a feel for sentiment before doing even this though.