RRPetrol is an extension plugin, so you don't really "embed" it. Extension plugins extend the functionality of RR without requiring any kind of messy launch/embedding procedures. Generally speaking, for an extension plugin to work, you just have to copy its DLL into the Plugins folder of RR, register it (regsvr32 plugin.dll) and make sure you take care of any other plugin requirements (skin/files/settings/etc) -- this varies with each plugin. RRPetrol requires skin files to support its screen/function (you can download from its thread if the elite skin doesn't support it directly -- which is probably the case). You should most likely read the readme.txt within the rrpetrol plugin package and it should have any requirements/settings/etc for it to work.