Verdana  Suggested by SashiX 

@SashiX: I've checked, and its not Verdana.

yes it is, you've check it wrongly

How am I suppose to check it. the site comes up like this more me

http://www.microsoft.com/typography/fonts/font.aspx?FMID=1957

How you suppose to check it? If you don't know how to do it, why are you saying it's not Verdana? I've checked it and it's Verdana at 10 pix without AA. It comes with Windows. If you don't have a friend with Windows, buy it from here.