Lyndidon,
I think you grabbed the wrong link for your sample. KB17476 is regarding the UAC install with SRX not the SSL VPN.
I would suggest Baastax use this thread for the questions about how to configure the SRX. And if he has questions the the SSL VPN settings they would be better served in the SSL VPN forum.
Baastax,
Unfortunately, I don't believe there are any NCE (network configuration examples) published yet for these scenarios.
For two arm two dmz on your SRX these would be the basic steps:
Design
Select your subnets for the two DMZ zones
Select your two interface addresses on the MAG in these zones
Design your ip pool requirements for the MAG and note the subnets or addresses used
Note any subnets NOT directly connected to the SRX that need to be reachable from the MAG
Create a list of internal resource addresses that remote users will access from the MAG
Create the two DMZ zones, add the interfaces
Create destination nat for your public address in untrust to the outside dmz address on your MAG
Create a policy allowing ping, http, https and 4500 from untrust to the outside dmz address of MAG
Create policies allowing access from your internal dmz ip address and pools designed above to your internal resources
Add routing to reach remote subnets from the SRX