png image problem, very newbie question

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tonyg

There should be nothing wrong with what you have done in this part of the program. You have set a few options so it might be a case of not setting them back afterwards (or somewhere else in the program).
Try creating a simple program to see whether you have it working with this image...
e.g.

Graphics 800,600
back = LoadImage("background.png")
fore = LoadImage("fore.png")
While Not KeyHit(key_escape)
   Cls
      DrawImage back,0,0
      SetBlend MASKBLEND 
      SetAlpha 1 
      SetRotation 0 
      DrawImage fore,100,100
flip
Wend