Geforce 4 Ti 4600 has a special NVIDIA only connector on the back which looks a lot like SVideo, but has more pins
Anyway, VisionTek, at least, shipped the first batch of cards without supplying the connector. (Which steams me)
You have two options
1) Mail their support department and get on a list (like I did) for them to send you a replacement. NOTE: THEY HAVEN'T DONE IT AFTER A YEAR, so you may have to bug them.
2) Try to find a Geforce2 which has old SVideo out and put the GF4 in your main computer =)