Yes spore mods do work. You can find the largest list of spore mods here: http://sporedum.net/spore-modding/spore-mod-index/
Go to www.MacGamingMods.com it will be There
no
You can not get it for free. You can only download the Spore Creature Creator Trial for free.
No you can't just use mods instead.
You can download Spore: Creature creator free trial onHttp:/www.Spore.com and I have found plenty of sites that allow you to download spore free but its illegal and you can get a hefty fine or serve time.
Yes.
It probably wont work because your computer doesn't meet the requirements. The same thing happened to me.
Spore Actually has More Parts than the creator does. Source: I am a big fan of spore and have played both games.
you cant
The website had mods on it so it was banned to prevent people from getting free parts on spore
well it depends on if you have hacked the trial but if not the full version has more parts than the trial