Ok, I know that some of our games look quite small so here's a way you can try and change the screen sizes. Firstly download the jar file...

1. Open the .jar file using WinRAR
2. Open the META-INF folder and drag the MANIFEST.MF file to your desktop.
3. Open MANIFEST.MF in Notepad and type the desired resolution (found on your phones details page on the site) at the end of Target-Display-Size:

Nokia-MIDlet-Original-Display-Size: 176 ,208
Nokia-MIDlet-Target-Display-Size: 352 ,416

4. Save the MANIFEST.MF file and drag the file back into WinRAR and press OK.
5. Close WinRAR and you should have now changed the resolution of the desired game (fingers crossed)

Please Note:

* The Original Display Size is the actual resolution of the game.
* The Target Display Size is the resolution you want the game to be displayed at on your phone, for example 352 ,416 is the resolution of my Nokia N80. Please be aware that the resolution of a game can be resized larger but not smaller.

I hope this information comes to good use