How to launch applications in 32 bit from Terminal in Snow Leopard?

How to launch applications in 32 bit from Terminal in Snow Leopard? Like a lot of people, I have some issues with launching my applications in 32 bit mode, because of the far-from-perfect LCC 3.1 driver for my Logitech di novo edge keyboard. Basically, I am not able to use the correct keyboard layout when in 64 bit mode (my layout changes when I switch applications which is very annoying).
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bert [Entry]

"If it’s only about MacVim, you can strip the 64-bit code from the binary with ditto.

ditto --arch i386 /Applications/Utilities/MacVim.app/Contents/MacOS/MacVim /Applications/Utilities/MacVim.app/Contents/MacOS/MacVim_i386
exec /Applications/Utilities/MacVim.app/Contents/MacOS/MacVim_i386

I just tried it and it seems to work. Maybe you can even pipe through ditto, but I have my doubts."