On a slightly lighter note than my other post......
We're currently going through the annual mobile phone upgrade at work, and I went for a Nokia 6233, to replace my slightly boring but worthy 6210.
This necessitated a change of phone cradle to suit. My employers will pay for a charging cradle and bluetooth headset, but not a full car kit, so I've always paid up myself for the full kit, as I can't stand looking like a Borg assassin!
My kit consisted of an original CARK-91 kit, plus an adaptor cable to work with later phones. It's been through 6310i, 6230 and 6021 without problems.
So, I cheerfully ordered a CR-56 cradle to suit the new phone, slapped it in, and it worked fine -but wouldn't charge! "Charger not supported" kept coming up. Some trawling of the web revealed that this is a known problem with older CARK-91 kits and some of the newer phones. There are some mods you can make to achieve a result, but it's a lot of faffing about.
So, I've had to pay out for a new CK-7W (sorry about all these numbers, by the way) kit, to make things work. It went in easily, charges, and supports bluetooth as well as the cradle, so it's pretty cool.
On the other hand, it's £70 I could have done without paying out!
Anyway, the whole point of this drivel is to warn anyone going down the same route, and to say that if anyone wants a CARK-91, plus a cradle for a 6233 or a 6310 (or both!) (yes, more numbers!) I've got 'em available.