how to burn mkv files

HI, I would like to know if there is a way to convert mkv to mpeg or avi so I can burn it after. I downloaded the matroski pack and WMP can read it but I can’t open the file in nero to burn it.........

VirtualDubMod, a spinoff on virtualdub, can natively decode matroska files. You can convert mkv to avi. If the codec is supported in an avi container you could do a direct stream copy (lossless transfer of video/audio data).
http://virtualdubmod.sourceforge.net