BMUS keeps scores as well.
Tsubaki, I think most people play the game with the VJARMY site open near them. I know that's how I do it. So everytime I finish a song, I can just enter in the Perfects, Greats, Goods, etc. from the Overview screen right there and then. Takes like ten seconds per song. If this isn't practical for you (like if your computer is in a different room from your bemani setup), you could do the MemoryMani mass-upload thing. See one of my posts a page or so back for what you need.

