I had change the default font via registry as told in Fonts - Change
"MS Shell Dlg 2"="Tahoma"
"MS Shell Dlg"="Microsoft Sans Serif"
but the problem still presist, as seen in my first attachment. I thougt the font style is correct just turned into Bold style.
I had checked at "window color and apearance" for maybe accidentaly i clicked Bold, but i found it no bold.
now I had change it to "sagoe UI" for both dlg and dlg2 then restart my computer and the font already changed and seems normal.
But i wonder why when i use Tahoma and Sans serif i had it in bold?