Can BricoPack make the font look like this:

Try Vistart:

http://lee-soft.com/vistart/index.html

Thanks But is it possible to use that font in the theme?
I mean to use that font in title bars,start menus,icons,etc.

1) Right-click on desktop, and select Properties

2) Select the Appearance tab and then press Advanced.

3) Select the Item and then change the font to Segoe UI.

You will only be able to change the font of start menu items when you are using classic windows theme , other visual styles will not let you do so unless you edit them ...