we're have been relying on the Timezone information inside the Windows registry pretty heavily.
To identify the time zones, we have used the index that is stored in the registry.
However, we have now found several problems with that:
When searching the internet for a secure way to rely on the info, always the same piece of code shows up.
This is how we have used this piece of code so far:
TimeZoneInformation availableZones =
However, this piece of code won't work on Vista or Server 2003 Enterprise...
Any ideas what info one should rely on when using Timezones?