installation error codes

have been trying to download Adobe Reader 8.1. after each download,
installation has to be aborted as a result of Error 1406 which states

'Could not write value Installed to key
\SOFTWARE\Microsoft|Windows\CurrentVersion\Run\Opt ionalComponents\MSFS.
Verify that you have sufficient access to that key, or contact your access
personnel'

am using Vista Home Premium for the first time. what am I doing wrong? can
anyone help with this? this did not happen with XP
--
john b

Do you have firewall or antivirus software installed on your system? d
a search for adware - you can always use system mechanic 6 to search fo
you. (i always recommend this application since it has proven to wor
time and time again) and remove any adware or spyware. Bring your syste
to peak performance and trying installing Adobe Reader 8.1 again

--
certified2fix

Also, are you d/l 8.1 or are you installing it from CD? Do you have
good working copy of 8.1? It sounds as though you are trying to instal
8.1 with a bad key

--
certified2fix