AlphaBlending using WinAPI

Ok. There is function AlphaBlend declared in msimg.dll - this library is in W2000, and I think in W98 too.

If I want to use this lib in W95, I will have to copy it from W98.
But I don!t have NT system; so is msimg.dll on WinNT 4.0 or less?
If not, should I copy one from W98 or from W2000? (Just fact: W2K version has 6kB, W98 has 52kB)

And I found out, that this AlphaBlend function calls GdiAlphaBlend32 in GUI.dll. Does anybody know, if such function is in older gui libs? Or I have to copy new gui.dll together with msimg.dll (what will probable be quiet complicated) - or; does anybody know the declaration of GdiAlphaBlend32?

Well give it a try, I would say. But 2000 is an Operating system which is based on NT Technologies, so I assume that it's better to use the 2000 version