Wondered if I can upgrade to 3.9 over the top over an existing 3.7 hdd install? Does it splat all my existing data or upgrade around it? If it can be done, how do I go about it? -Just put the livecd in and run the HDinstall off it?

Thanks

Mors

p.s
If it can be done to 4.0 - even better!!! -How?