14-pin Compaq ATX to 20-pin mobo

I want to use a Compaq 14-pin ATX power supply from a Deskpro 4000EN
on a normal 20-pin ATX motherboard (I know this sounds silly, but I
have two other 4000en's running Linux and Solaris, and this 90W PSU is
extremely quiet, so this case/PSU would make i nice home for my
mini-ITX allways-on system, which only needs 50Wor so)

So if this isn't a totally rediculous idea, then how would I wire the
14-pin PSU to 20-pin mobo?

PSU System board

1 +3.3Vdc 1 +3.3Vdc
2 +3.3V Sense 2 +3.3Vdc
3 Signal GND 3 Signal GND
4 +5Vdc 4 +5Vdc
5 Signal GND 5 Signal GND
6 +5Vdc 6 +5Vdc
7 Signal GND 7 Signal GND
8 +3.3Vdc 8 PWR-OK
9 -12Vdc 9 +5VSB
10 Fan Off 10 +12Vdc
11 On/STBY 11 +3.3Vdc / 3.3V Sense
12 +5V Aux 12 -12Vdc
13 +3.3V Sense 13 Signal GND
14 +12Vdc 14 PS-ON
15 Signal GND
16 Signal GND
17 Signal GND
18 -5Vdc
19 +5Vdc
20 +5Vdc

Thanks