>Can anyone share with me the API calls that would set the menu font on a users machine? Thanks.

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Hi Calvin,
I'll do my best not to lecture you on what you should and shouldn't play with, blah, blah, blah...

Also, I trust that: either you have sufficient experience to know the benefit of distinct Development, Testing and Production environments, OR if you screw things up completely (and in a Production situation) that you will look upon it as a learning opportunity!

Anyway, the font settings you need to change (in NT4) are stored in the registry under a weird looking key for the current user:
"HKEY_USERS\S-1-...a bloody big number...\Control Panel\Desktop\WindowMetrics"
double click on MenuFont. But a much simpler key for the default User:
"HKEY_USERS\.Default\Control Panel\Desktop\WindowMetrics"
(note the period in front of Default) although, for this key you will probably need to add the MenuFont value.

This does not look like a trivial value to be playing with - the font size 'appears' to be stored in the first byte. With an approximate value of (in hex) 0xFF - nPointSize. I say approximate because I've just spent the last 10 minutes messing with my Display Settings and observing the effect on the registry key. Viz. (for Tahoma):

Point Size     First Byte
----------      ----------
    8             0xF5
    9             0xF4
    10            0xF3
    11            0xF1  (note that 0xF2 is missing)
    12            0xF0
    13            0xEF
    14            0xED  (note that 0xEE is missing)

Hopefully, you get the picture. I have no idea how you would programmatically obtain the perverse big number in the key above - but where there is a will, there is usually a queue :-)

Check out the Fox Foundation Classes for code to access / manipulate and create registry keys (probably also some useful bits here on the UT in the Files Section.

Hopefully this was helpful, and not just an academic exercise.