Depends on the outputs from your PC graphics card. If it has a DVI connector then you just connect PC to TV via a DVI cable.
If there is no DVI output from your graphics card then it will have VGA D-sub output and your TV either needs a D-sub input, which many have, or you need a special adaptor click here
If you go for an adaptor make sure that its the rightway round male/female for your needs.
In addition you will need to connect the sound output from the PC to the TV if you want to play DVDs, games etc. The DVI or VGA is graphics only