Light Control with Dimmers

I need to set up light control using a PC (Linux)? I have 6 light of about 65W each and an other two which are less don’t know exactly.

Could some tell me how to do this using Arduino?
What hardware I need to buy? Please give me as much details as possible since I know little about electronics but i know programming.
If i could have normal dimmers or on/off switch just in case I have computer problems so I could still control it. will be cool!
Could it be extended to control more lights? (more than the 8 light current in use)

Maybe this will help?
Volatage: 240V
frq: 50Hz


try using google to search the forum, as this has been mentioned a number of times…

good luck