[Evolution] Updating Evolution

[Andrew J Dance <creative wiredinterface com>]

A couple of quick questions:

I'm currently running evolution 0.10.99, will upgrading to the latest
snapshot delete or corrupt either current messages or settings? If so,
is there a way to backup settings/messages and then restore after
upgrading?

Although spell checking works fine, how can I set the language to
British English? (I've installed aspell-en-gb 2.0.33.7.1)

Thanks,

Andi