splitter question

hi guys just wondering can i put a splitter on my cable that runs to my modem to take a feed off it for another box in the same room will my internet still work any advice much apprieciated

 

It should still work stef.

 

thanks do u know the best place to get the coax connectors if its not to much hassle m8 cheers

 

Have a look here:
>> http://www.skywonder.co.uk/home.php?cat=2&catexp=2