Does anyone know, or can anyone find out what console command would cause a vamperic level up within Jaxalot's 'Vampire Realism 2.2' mod?
If so, could you also tell me how one can discover such things?

Thank you.

Try this in the console:

startscript vr_debugmenu

Select: "Increase Vampire Level"
Then: "Resume"

I just converted the plugin to text with http://code.google.com/p/mlox/wiki/Tes3cmd and looked around for level, saw the global "vr_vampireLevel", and found the scripts that modified it ...