''PS'' TO BELOW POST: STUPID COMPUTER QUESTION...

am i playing with fire trying to setup the new  computer up myself ?  is it a simple matter of attaching the cable-company's cable to the tower and just firing it up?  giving it a 'name' and then sign in to my server  & go' from there  and accessing their site ?  Do they set the connection automatically once they 'detect' my  new connection  or is it up to me to do that?  i guess i thought it was just a matter of ''plug & play' ...maybe i should have the store to the setup instead of me trying to do this ?   thanks again - Edythe