create a vector dock icon file for mac application

We created an application for mac and will make it compatible with PC. We now need to create a dock icon for this application. - you would need to need to create Icon files - .icns ( and maybe another . From raster or vector file ( if this possible ). Icons must have all standards for Mac now, and for PC ( without any problems with compatible ). We have a design/ image for the icon in raster and vector files. Sample of an icon ouicon: [login to view URL]