Kip's questions

I'm trying to configure Java options passed into TomCat for a 3rd party application that I'm deploying. The instructions that the app provides are:

1. Open the Tomcat configuration tool from the Windows menu at Start > All Programs > Apache Tomcat > Tomcat Configuration.
2. Click Configure and select the Java tab.
3. At the bottom of the Java Options field, enter the following:
   -Dexample.license.directory="C:\Program Files\example"
4. Stop and restart the application server.

However, I need to do this programmatically, so I'd like to know what config file these options can be set in. Using the GUI is impractical for deploying the app to other developers' environments.

(I'm using Tomcat 6.0 if that is relevant...)

I am using XAMPP for Windows, and I have enabled Mercury Mail Server. I am really only doing this because I need an SMTP server for sending mail; I don't need to receive any mail or use any POP3 accounts. In the XAMPP Security Panel, I get the following error:

The test user (newuser) for Mercury Mail server (POP3) has an old password (wampp) Please check and perhaps edit all users and passwords in the the Mercury Mail server configuration!

How do I do this? I really just want to disable POP3 altogether, or maybe just remove all POP3 users. I have searched Google and I have searched the XAMPP forums, but I can't seem to find how to do this. The XAMPP Control Panel has a button to go to administration of Mercury Mail Server, but it does nothing! The XAMPP security page even tells me:

For FileZilla FTP und Mercury Mail, you must fix all security problems by yourself! Sorry.

So I'm turning to SF for help. :)

Is there a Windows equivalent of Unix "whoami" command? If so, what is it?