Update 07th May,2008: Guys u can use this apps also. Let me know if you face any problem. http://rapidshare.com/files/76784958/S60v3JarResize_v0.2_FIXED.rar.html
Have you ever tried to install a Java game and only to find that the resolution is too small or too big for your phone? If you have, then you are just like me. Sometimes, I have to squint my eyes just to play the game as it is too small on my phone.
You can actually change the resolution of the Java Games for the Nokia phones very easily.
You should be using WinRAR for this. You can download an evaluation copy of WinRAR from http://www.win-rar.com.
Using WinRAR, open the Java file. The Java file has a file extension .jar.
There should be a folder called META-INF. Open that folder.
Inside that folder, there is a file called MANIFEST.MF. Drag and drop the MANIFEST.MF to your Desktop
Open it using Notepad and at the end of the file, add the following two lines to the MANIFEST.MF file.
Now save the file. The drag the file back to the .jar file folder META-INF using WinRAR.
Install the JAR file to your phone.
Question: What is the xxx,xxx in the Nokia-MIDlet-Original-Display-Size & Nokia-MIDlet-Target-Display-Size?
Answer: It is the screen resolution.
The above shows that the original game resolution is 176×208 and the new target resolution is 352×416 i.e. for N80.