Hey Tim,
Yeah I get that but I inherited this site from the person who owned the company before me and I've no idea what the steps are to upgrade it and to be honest I'm scared that the operation will kill the site anyway, I'm sort of caught between a rock and a hard place...
Can I do an in-place upgrade without any issues?
The hosting company does do a daily backup of the whole site so I guess I could revert to a previous day if it really goes south

Cheers
Pete