I am working on the solution to this problem. I think the answer lies in the WIFIwake.exe program that is available on the Hermes and Universal forums. There are three ways this problem could get solved:
1) Edit the WIFIwake.exe so that it can be used with other devices (possible I assume, because the Hermes WIFIwake is a slightly changed copy of the Universal WIFIwake) This will probably prove beyond my capabilities.
2) Get the password by looking at the code of WIFIwake.exe. I have managed to open the exe with a debugger program and there are some likely contenders. I am in the process of trying them now. Trying them all will take some time.
3) Find the guy who wrote these programs and get him to write another that is either universal or that can be used on a Treo 750. I, personally, don't want a 750, but there are more than a few Japanese users I have seen that would be interested in getting this to work.
Anything in here anyone can help me with? I need it.