I want to run a .jar file on my Nokia N73 phone. I cannot figure out what I need to do this. I have downloaded the Sun Java Wireless Kit but that just connects to its own emulators.
You have to transfer and install that file to the mobile phone. You have few options here:
Install Nokia PC Suite and use it's Application Installer to transfer JAR file to the phone.
Send it by bluetooth to the phone
Upload the jar file to some file hosting service and browse to it from the phone
All this considering that your file is a Java application for mobile (J2ME)