Try to remove every last trace of CS2 first.
On installing CS3 it should ask for the serial number of the previous
version you are upgrading from (proof that you have removed CS2 since it
can't find it !)
I installed CS3 (upgrade) on vista ultimate 64 bit without a problem.
What I do find though is that the Adobe auto updater fails with memory
errors so I suppose manual updates are going to be necessary (if I want
them)
Phypps
"Jaco" <Jaco@discussions.microsoft.com> wrote in message
news

2DD7A56-FE83-4BE3-B9B6-91629585C31B@microsoft.com...
> Have CS2 on my computer with vista platform, bought an upgrade but could
> not
> install it. Have tried all techno advice form adobe as well as
> user/administrator issues. Keeps giving message: One component installed,
> two
> not installed. Anyone having any advice