[Trying to fix an image I paid for and R is not transparent]

ok I am an idiot they sent me .png files.   One color, one black and white and one all white.  Also an .eps file.

 

How can I modify the transparncy

 

here is the screenshot

 

http://awesomescreenshot.com/0095euqf16

 

Thanks again to all who help the hapless....and the helpless.  

[Trying to fix an image I paid for and R is not transparent]

hi all.   brand new guy here trying to fix a jpg I got from a designer.   basically part of the logo has been filled in white instead of allowing transparency so when I place the logo over a dark back ground it shows white  .  Any idea how to fix with paint?   see below