Export the keys concerned from the Registry and copy them into a
single file. Compare these with FC (or whatever file compare program
you have in whatever operating system you have)
About 4 keys should hold all the settings, depending on how far you
want to go with "settings". Give a rough idea of what settings you
mean.
A little more...
The relevant IE keys should be:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet
Settings
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet
Settings
(except for Autocomplete, but that would be difficult to compare)
....Alan