@ALL-IN888, first, you don't have to wait to end of free period to subscribe. If you do it now, the system will automatically give you full credit for the remaining free period and not bill till then.
The symbols you can enter into that Index Portfolio are: $DJI for DJ 30 Industrials $SPX.X for S&P 500 Index $COMPX for NASDAQ Composite $VIX.X for CBOE Volatility Index $DJT for DJ 20 Transportation $DJU for DJ 15 Utilities $TNX.X for 10-YR Note $TYX.X for 30-YR Bond $FVX.X for 5-YR Note $IRX.X for 13-Week Bill