I need a good quality rasterized world map, Winkel-Tripel projection, in which all countries have different (random?) colors. No borders, text, grid or anything else on the map.
Is GIS the right way to go? I found a lot of map data on naturalearthdata.com. Can I create this map with QGIS? Do I need ArcGIS?
I'm completely new to GIS; it looks like an exciting field. I'd appreciate any help to get started.