Thank you Urs,
I have done as you said and all works ok. it puts the alternate route next the the original
and as long as I put in the Arrival and Approach it shows the plane as it should. No top
of descent is marked on the new route but that is to be expected.
I note that the first time I did it , it just put in the departure and arrival air ports-presumably
because I started at the Star rather than enroute.
By the way, when I click one of the bottom boxes(enr, ndb etc.) they work ok but
there is no yellow border around them as there is on a friend of mine? I am up to date with
all the updates.I find the program superb, it adds a new dimension to FSX and I would not
be without it.
David