Wave driver/ASIO driver

[clausiii]

Please, I need some advise! Can someone explain, how to get them to work properly?
I can´t get them work with Wavelab (4.0.1b) at 24bit/48kHz. 44.1/16 works fine. The "Sound Mapper" of Microsoft works! I can´t get it!
btw the DigiWaveDriver ain´t able to record with WL it doesn´t appear in the WL prefs.
Should I set the DigiWaveDriver as system audio driver in the sounds and multimedia settings in XP?
btw (part 2) I tried the MMEhelper, it made the driver in WL visible, but it seems, this is not a "multiformat"-driver (for me for now).

as an appendix one more question: what´s the right workflow:
bouncing my 48/24 mix in ProTools @48/24 and mastering and conversion this file in WL?
bouncing my 48/24 mix in ProTools @44.1/16 and mastering this file in WL?

Thanks for your hopefully soon coming comments...!

PT 6.4
Digi001