Alright, i used 400mb of my 5.6k usage, i used the 400mb downloading the xbox live i think but i also played so i do not know exactly what percentage used playing live and what percent was used to down load the one time only download for when you first get xbox live. Does playing online and messaging and stuff while im playing online run up my memory on my USB drive modem?? Or does it act as just being on the internet and not disrupt the usage that much.