.dll files wont inject

I'm using Perx injector for flamesword hacks and Prohacks, yet It wont work when I piush insert for both, so here are the steps I used.

1.Download .dll files and tranfer to combat arms folder

2. Open Perx injector then add .dll files for any of the two hack I use and put Engine for the process name.

3. click on start process.

4. open combat arms. Perx says injection failed for both

Please correct me if any of these hacks are patched or if I am doing anything wrong. (windows vista)

Thank you

Engine.exe
Not combat arms.exe
And run the injector as admin.

thanks but I run it engine .exe and Ill try running as admin, do you know which one works?