I can't get the Metal Gear games to run either, but I do have a solution for your keyboard problem. Transfer the keyboard.zip file that comes with fMSX to your PSP, in the folder where the emulator resides (for instance, ms0:\PSP\GAME\fMSX). Now, when you load the emulator, highlight CONFIG and press O. Highlight "Wallpaper Keyboard", then press O. Select the file keyboard.zip, then press O one more time. fMSX is now configured to display the keyboard whenever you press the R trigger.
JR
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