Changing my theme

I’m sorry but as you are using a commercial theme, you need to seek support from the theme’s developer/vendor. We do not support commercial products here.
Try http://themeforest.net/user/whoathemes

Still, I’d recommend making a full back-up of your site before you start messing around with it – just in case :).

You should be backing up your site on a regular basis –

http://codex.wordpress.org/WordPress_Backups

You could easily lose the entire thing if your server goes down or your site gets hacked… Don’t depend on your hosting company to do this kind of thing for you – I’ve seen people who have completely lost years of work :/!