how do you change the pixel ratio?

[femme_one]

I was wondering how do you change the pixel ratio in a program using GDI and Visual Studio .NET 2003? How do i change the pixel ratio to be 1 pixel = 300? What class do i use and what does the code look like? Examples will be great!
Thanks for your time.

[Marc G]

What exactly do you want to accomplish? You can't just change the pixel aspect ratio of GDI. However you cans imply scale your coordinates and such to change the aspect ratio of your drawing.