"I'm guessing us will be patched again soon...since they made some blunders in some of the stats for spells.
Most likely also the reason why we(EU) have not been patched yet." (Source...the other forum^^)
I don't know if there's a new patch for US servers and the dll i posted is the last from HansW. So i think you have to wait again.
You can activate the speedhack after you inject the dll. The use the addon-button "HackPack" > "Speedhack" > select your speed.