Hi redpacman,
did you get a male (pins sticking out) or female (holes for pins to go into) connection?
Depending on which one you got will dictate which order the pins go in.
The pin numbering is standard so that 1 goes to 1, 2 goes to 2 and so on up to 15.
I'm not sure which thread you're reading for Frosty the Snowmans VGA mod, I assume the one pinned in this Audio Video part of the forum. You might not have noticed the link to the
Xbox VGA Tutorial provided in that thread.
It is recommended that you read through that tutorial as is guides you through the whole process and includes a couple of things missing from the diagram you are using. For instance the video mode select jumper wires and the selection or resistor for the horizontal refresh rate of the LM1881.
Here's a link to the Wikipedia page for the
VGA connector showing the pin definitions.
I have also provided my xbox AVIP plug / socket diagram and pinout table below.
Hope this helps
Smoke Screen