My only thought is that perhaps your problem is not QoS. You can never really expect full 10Mb or 100Mb performance from a network or internet connection unless it's all LAN. If the lag you speak of is in-game, then I can almost guarantee the issue is not QoS but rather the server and your connection to it.
/L.A

LA is correct, not to mention I doubt that you have an internet connection that runs as fast as your LAN connect anyway. How about posting your system specs and what type of connection you have. Also, post a recent traceroute between you and the CS server you are dying to play on.

Why don't you unbind the QoS from all your adapters? Stop using it alltogether and see if your ping improves. Anyways, what sort of pings are you getting?

Goto:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
 
Create a new DWORD value with the name of "DisableTaskOffload" and give it a value of 0.
 
As it stands, 2K and XP support QoS in software, and even lowering the settings to 0% don't fix it. By making the above registry change, you stop the OS from messing about with all of this and it allows your NIC to do the work instead (providing it supports it). This will give you much better performance.
 
I'm not sure what MS were thinking of when they decided to bypass the hardware in the NIC and do this in slower software instead. Still, the above change should help fix the problem