Increasing FONT SIZE( in Module Pool )

Hi Folks,

I Have Created a Module pool screen , It contains Push Button and Radio buttons But i need to Increase the Font Size and width of a push button and also radiobutton..If its Possible Kindly Let me know, pls...

Requirement is i need display my sap screen on VMT machine(which is like a PALM TAP,and user will operate with a pen)...

Thanks in Advance,

Mahesh k.