Does anyone know how to change the DPI on an HP photosmart C4180?

I need to know how to change the DPI from the default 200 to atleast 300 in order to do what I'm trying to.

Any help?Does anyone know how to change the DPI on an HP photosmart C4180?
Go to start, settings, printers and faxes. Your printer should be listed there. Right click on it and select properties. All of the options including DPI will be listed there on various tabs.