Hey there,

I'm thinking of modifying a theme I use. Is it easy if I've never used Plazmic? Do I need a lot of tools etc? O if I simply download the soft I can modify the theme and save it as a new one?

You can not modify a theme you did not create.

I cannot technically or because it's not fair to the creator?

Technically. It is impossible to do so.

Awww Thanks anyway!

but you can replicate with a lot of work but its easier and you will find out in time its more fun to come up with your own creations i find it more rewarding that way