>I realized that If ‘Report2’ has a horizontal layout (while ‘Report1’ and ‘Report3’ have Vertical), the layout of ‘Report2’ is produced as Vertical. Reading the help file this seem unavoidable. I’ m asking a confirmation about that.

That is correct -- the way chaining works you are stuck with the orientation of the first report.

>What is strange is the numbering process of the three reports, since the first 1 gives me:
>Page 1 of 1 (I’d expect 1 of 3)
>The second: page 2 of 2 (I’d expect 2 of 3)
>The Therd: page 3 of 3.

This is one flaw of the way chaining works. At the time the first report runs, it doesn't know that you are GOING to run two more reports. Therefore, the page count only reflects the first report. When the second report runs, it knows about the preceding report .. but it still doesn't know that you are GOING to run another report. That's why the page count reflects the total of the first two reports.

The only way to get around this is to do what we have always done in the past for total page counts -- run the reports to a file first -- remember the total page count -- and use the new total page count in your report instead of the native one.

I wish I had a better answer for you!
Cathy