>>> I'm mainly interested in using real track pianos as a learning tool,
so they would need to show the real charts.

All of the pianos have RealCharts, except some of the comping ones on Rhodes Piano.

RealCharts for piano are a good tool for learning piano. For example, on the latest version, 2012, there are piano RealTracks by John Jarvis, a CMA (Country Music Association) Pianist of the year winner. Plus Jazz and Bossa tracks from NY Jazz-Great Mike LeDonne, plus Dixieland and Older Jazz styles from the great pianist Miles Black. That's just in the 101 new RealTracks - if you're upgrading from 2009, there are about 505 new RealTracks.

>> Is there a way of knowing prior to install which [piano] real tracks will have real charts ?

Yes, for piano they all have RealCharts, unless they are Rhodes comping (Rhodes soloing do have realcharts). For guitar, they all have RealCharts. For Bass, some. Soloing RealTracks: All have RealCharts.

If you want finer detail, you can determine this exactly, prior to install. Just run your Band-in-a-Box program, open RealTracks picker, click Show RealTracks that are N/A, and then look in the "RealCharts" column.
That will tell you exactly which RealTracks from which Sets have the RealCharts.

>>> Can I install only selected real tracks to laptop or do they have to be installed as sets ?

You install as sets. Typicall if one in the set has RealCharts, they all do. If space is an issue, you can just delete RealTracks folders of ones you don't want

You can look on the information about the sets, avaialable here http://www.pgmusic.com/bbwin.realtracks.htm

Have Fun!
Peter Gannon
PG Music Inc.