The official ATI drivers for the Radeon series of cards do not support the extended functionality (tuner, etc) of the All In Wonders. However, there is a project called Gatos
which aim to provide this. As I don't have an AIW I have no experience of how well it works, if at all, but it's most certainly worth a try.
There are several good instant messaging clients with support for MSN, among those is my favourite Gaim
but others swear by aMSN.