I think what the OP is asking is if there is a way to manipulate the software on his Bold to type the z when he presses the z on his keyboard. If this is the case you might want to try to change the input language.
Go to Options -->Language --> Change Language to (German?) -->Change Input Language to (German?) --> then save
This is the only method I know of and some people have stated that it doesn't work. Let us know if it works.
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