ServiceInstall table

I am using orca to edit a Windows Service Install msi.

The ServiceInstall table is giving me grief in that adding a row fails
repeatedly.

I think the Component_ category is the one that is the cause. The
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/msi/setup/serviceinstall_table.asp
file states that this is "External key to column one of the Component Table."

What on earth does this statement mean? Is it the value in the Component
column which is column one? and how do you identify which row should be
used? And where do you get the External key?

cheers

Peter
--
PeterW
.

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