Problems getting CPU mining going to test DigiCPU (Qubit)

As luck would have it a second CPU arrived today for an upgrade I'm doing on one of our HP ProLiant DL360p servers.  Obviously after installing it I need a way to stress test it...

Firstly, I've noticed that both the GPU, and CPU miner links point to the same place (SGMiner).  I can't get this running on the server as it's Matrox G200 graphics card and doesn't have OpenCL.dll

I then went to the QubitCoin forum post and found their CPU miner link points to Minerd.  I've downloaded that and am using the following command line to launch it:

minerd.exe -a qubit -o stratum+tcp://69.164.206.169:4032 -u t74fXcaZRPsDs6YgRbfWddDSc1Bm6TitCA -p 123

This seems to initialize all the CPU cores, however it gives an error saying there's no reponse from the stratum server.

Has anyone managed to get the CPU mining working properly on a server OS without an AMD or nVidia graphics card?