Perhaps you are referring to the map's icon size? It could be set to "Stretch to Fit", which could make your icons look uglier in it as they are, well, stretched. In some interfaces such as the default one you can choose the icon size from an "Icons" menu item, this can be replicated by using the .winset client command to change the map control's icon-size parameter, or doing it through DM itself by calling winset() to do the same. For more information, you should look up winset() in the DM Reference and the icon-size parameter in the Skin Reference.