You really should check. Coaxial is going to be your only option if you don't at least have composite, and I can tell you from experience that coaxial looks like s**t.
It only takes a little a bit of time to think about it:
Coaxial shoves all sound and all video into the same cable, extreme bottleneck for both sound and video quality.
Composite(yellow cable) separates these signals and sound is split into a cable for each channel(left(white) & right(red)) which gives way more bandwidth for both sound and video and therefore improves the quality of both.
S-video splits two channels of video into their own wire, which is located within the same cable. One channel is either light or color I think, and the other is everything else. More bandwidth for both of those means even better quality.
Component splits 3 parts of the video signal, one for color I think, one for light I think, and one for everything else I think. Which obviously gives even better quality.