Before I go ahead, I would be grateful if someone could answer a couple queries.

Am I right in thinking that I should uninstall 4.12 before installing 4.13 and that I should start 'uninstall.exe' directly rather than using control panel/add or remove programs etc?

Is there a way of saving my options or will I need to re-configure LW from scratch?

Are the contents of the 'incomplete' folder deleted when uninstalling? Can I simply move them when uninstalling and replace them later?

Thanks in advance for your advice.