Quote Originally Posted by Gr!ff View Post
Downloadlink doesn't work
Don't worry, the thing itself doesn't work either

I admit I haven't tried it, but this thing about changing some registry keys has been around for a while, and of course (as it has been mentioned already) ET uses UDP protocol, so it can't improve anything in that case. Someone has reported some improvements with other games after changing those settings, but I didn't test it personally.

In general, it's a bit too much optimistic to think that a noticeable part of your ping could depend on something different than network traffic, and distance from the server. (Some isp use interleaving as well, another thing that gives you a higher ping).
Not to mention downloading/uploading, sharing internet with other pcs...

Even if you could lower your ping (and in ET's case the answer is no) it would be barely noticeable over all those things.