Joomla 2.5: Upgrade customised Moset's Tree & Uddeim

I have developed a Joomla website that uses customised versions of Moset's Tree (MT) and Uddeim (Instant Messaging system).

I am looking for someone with experience of these 2 components to upgrade them to their latest Joomla 2.5 compatible versions. (MT > version 2.2.4, Uddeim > 2.6)

You would need to examine the custom code added to both components, and ensure this code is fully restored to the upgraded versions.