I think that there is a mismatch between the sharescope indicators you mention and the ones I use in Metastock.
Commodity Channel Index is Lambert's indicator that measures deviation from the statisitical mean. It is a good oscillator but not one that I use.
Commodity Selection Index is Wilders indicator for selecting stocks with volatility and trend.
I'm not sure what the Sharescope Volatility Index actually is but I don't think that it is Wilders index. Volatility can indicate tops and bottoms (high values) or suggest an imminent move (low values).
The Sharescope directional movement index is Wilders indicator (as is RSI) and there are several methods of interpretation mainly based on cross-over of +DI and
-DI. Try looking at
www.equis.com for more background and the connection with ADX and ADXR (the associated indicators that you can plot).
Regarding values this is a perennial question. You need to find values that work best on the time frame you are using and even try multiple values for different time frames (this works well with stochastics and roc).
The Achelis book (equis.com) recommends popular values for many indicators and is a good starting point.
Try reading some of the standard text books on technical analysis (eg. Murphy, Pring etc.) as these will give you a better understanding of what the indicators are and how they work.
Darth.