the data used to run and control the programs is kept in each OS's registry.
since they each have their own registry you have to have the programs data in each registry for it to work.
only exception is a program that does not have an INSTALLER but is a stand alone EXE file.
there are still some of them around.
"Aaron" <> wrote in message news:E8A53A4E-4A0E-425A-8B12-...
Hey there, I've just installed Vista to my machine, which previously had XP
on it. I have created a separate hard drive partition and installed Vista on
that. The problem I have however, is that I can't use alot of the
applications previously installed on my XP partition. I'm not wanting to have
to install, for example, Itunes twice, on 2 different partitions. I see this
as a waste of space. Also, things like games dont load up if i double click
the execute file. Is there any recommendations or software to allow me to run
applications without having to install them twice?
Cheers, any responses would be really appreciated.
Aaron