Changing Font of Start menu:

By default the Font style of start menu is tahoma but you can change the style of start menu the one which you like. Just Follow the simple steps and change the font according to your wish.

1) Right click on the desktop and select properties.
2) Select Appearance Tab and click on Advance button.
3) Select "Icon" from Item dropdown menu.
4) Select the font style tou like.
5) Click OK twice.
you can se the font style of start menu is changed.

NOTE: Similarly you can change the style of message box, menus, buttons and many other items in windows.