Modding BioHazard 2 Sourcenext

[SeiyaKou]

I've recently started to mess around with BH 2 sourcenext version for fun. At the moment I am able to:
- change PC/NPC skins (PLD, EMD+TIM) and swap weapon models (PLW) (common knowalage),
- changing background music/voices (SAP) (common knowlage),
- change the door sequences (DO2),
- rename RDTs so for eg. the BH 2 Trial Alley shortcut is playable (only the RDT, the BGs are messy),
- editing the save files via hexeditor based on Enrico's documentation (Biohacker 2 does not work with BH 2 SN ver saves for me).

I need help on two things:
- knowlage on how the BH 2 SN (and I think the other PC versions as well) loads the rooms so I could change the order (to eg. start a new game, go to Kendo's shop and after the door sequence end in the main hall of the RPD),
- ADT format (and YES, I'm aware of: http://rewiki.regengedanken.de/wiki/...dent_Evil_2_PC , but I don't have a clue on how to take advantage of that knowlage).

I would be REALLY gratefull if someobody could help to figure out the abouve mentioned things (explanation, tip, info, ANYTHING)! Thanks in advance!

EDIT: Now I know exact answer for the first question thanks to Enrico's RDT guide: http://z4.invisionfree.com/Resident_...hp?showtopic=1

The alley shortcut is fully playable now!

EDIT 2: My progress:

http://www.youtube.com/watch?v=mHHdZdvIgpE

http://www.youtube.com/watch?v=9lMXNInracU

[Arma Atma]

very good mod.XD
I also do that, but with AR codes to create new ways of playing the same game.
checking the mastercode certainly I did for the trial?