Good job you asked then.
Though you've not provided any relevant information there is no such thing as a standard Packard bell and fairly new TV doesn't help much either... model numbers for both would help out...
Making some assumptions that your TV is a flat screen one and has a VGA port the the correct cable would be this one
http://www.amazon.co....qid=1300463709&sr=8-2
And to get the audio you probably need this cable
http://www.amazon.co....id=1300464094&sr=1-15
Though there is a possibility you'd need this cable
http://www.amazon.co....qid=1300464143&sr=1-1
Note all the above are 5meter cables, obviously longer and shorter lengths are available.
Also if by chance your laptop has a HDMI port then you can just use a HDMI cable for both video and audio.