We have just bought a. We have just bought a Playstation 3 and for some reason we cannot connect

Question

We have just bought a Playstation 3 and for some reason we cannot connect it to the tv. (We have a Matsui, bought in 1998)The scart lead supplied with the PS3 does not fit in the back of the tv, but it does fit in the back of the virgin media set top box.This however does not seem to work. What are we doing wrong? Do we need to buy a new tv?