I am trying to setup a Windows 64bit CPU miner on my Windows 8.1 computer.  I cannot find a miner that will support a Grøstlcoin wallet.  Any help or pointer would be appreciated.  Perhaps I have to build my own ?  Which Github code base should I use ? C#, Java, JavaScript, Python ??  Thanks for your help and guidance, answers in advance.
I have a Nvidia GeForce video card. Which doesn't seem to be compatible with the ccminer or sgminer that I looked at.