hi there, cfosspeed has provide a new version that applicable for multi user on router....Below are some of the information that i extract from their website....

http://www.cfos.de/cgi-bin/cutecast/cuteca...ed85Is6OaWwKqnN

Multi-User Version cFosSpeed 3.91 build 1272
now available for download @ www.cfos.de/beta bereit!!
Now you can use cFosSpeed on several PCs connected to one router. Also a
new Traffic Shaping algorithm is available for users with variable
bandwidth. The installer lets you specify the type of broadband connection
you have:

- fixed bandwidth: Your connection has fixed bandwidth and you either
use it exclusively or all Internet traffic is routed through your PC.

- variable bandwidth with cooperation: Either your connection has
variable bandwidth and/or you use it with several PCs simultaneously
(with cFosSpeed installed on each PC).

- variable bandwidth without cooperation: Same as above, however
at least one computer has no cFosSpeed Traffic Shaping.

Settings:
"fixed bandwidth" allows lowest ping times, followed by variable
bandwidth with cooperation. However, if you have no influence on the
computers connected to the broadband connection, use variable bandwidth
without cooperation.

For best performance, calibrate each computer independently, i.e. while
no other computer uses the available bandwidth.