Sorry to tell you this but if you your other 10 friends don't have a T1 line or higher you can't get much more data over broad band internet uplinks. As for the LAN part the most you could have on there is maybe 6 or 7 freinds all at once. but no more. and that is if you have one of those GB networks. Seeing how a GB network router cost about $1,000 US and up I don't think that you have that. on a 100 MB LAN the most you could push it would be about maybe 4 or 5 at a time. It's all do to the data that has to go from you to all the others and same goes for any and all partys that are Video chatting. The pipe line to the internet and the pipeline to and from your computer is way to small to get all the data in and out with out chashing the hardware. So as for software, That is not your problem here it's you data pipeline to your LAN or to the intrenet.