I've moved over to .org using the export function. Most things seemed to work OK, but some didn't.
The biggest worry at the moment is that my email subscribers weren't moved over. The folks at wordpress.org said someone would be able to help me with this here, so here I am asking for help.
The blog my subscribers need moving from:
Thank you very much! :)
The blog I need help with is obscurehandhelds.com.