I assume your video-card has a video-in connector?
The red/white ones are for audio, the yellow is composite video, the bottom one is S-video in. If your VHS-recorder supports SCART (usually it does, unless it's really old), you're going to need:
* a scart composite adapter:
* an audio-cable (standard red/white tulip)
* a composite cable (yellow tulips)
OR
* an all-in-one cable.
Edit: Just ask for a SCART to Composite cable and they'll know what you mean.