When you export any graphic, when the export the image, the export dialog box pops up. Depending on what format you are exporting, the second tab in the dialog box is where you set the bitmap size (resolution), if you don't set a specific bitmap size, the default is 96 ppi, which is probably too low for your needs. You have to set the bitmap size to your specific needs - at least for the first image exported in a given session. Anything you export from the same Xara document will all export at the same resolution. Of course the next time you open the same document the resolution is defaulted to 96 dpi again.