There are 3 types of connection to most modern TVs that a PC can use, the 5pin Din AV connector, SCART AV connector and SV sockets. The output from your laptop will probably be either the 5pin Din or an SV connector. It's unlikely, but you may get the required adaptor with the laptop, if not, make a note of the connectors on your TV and laptop (or grab the instructions books for both) and head off to your local PC stockist to get the correct lead. You can get them fairly cheaply on the internet but with postage to be paid, you may as well buy from a shop.
You may need to make some changes on the Display Advanced page. Post back if you have problems and include your OS, and type of graphics card fitted.