I use this command from a desktop file: java -jar /home/opt/microemulator-2.0.4/microemulator.jar --resizableDevice 800 378 /home/user/MyDocs/opera-mini-4.2.jar

Only issues i have left to figure out are launching Opera without having to click Start in MicroEmulator, and how to launch Microemulator in full screen without the title bar.