Hacks don't work?

I think i've done everything i need to to get the hack working. There's no pop up or anything after i have injected crossfire with the dll file. is there anything wrong with what im doing?

1. I open the injector and set it to auto
2. I type in crossfire.exe (or if it automatically has the .exe on the end just crossfire)
3. I select my dll file to inject (hack)
4. I set the injector to close on inject.
5. and finally i run crossfire...

what seems to happen is the injector closes, and nothing happens
no pop ups or anything come up

im using widnows 7 on a laptop (dont know if that makes much difference)
and yes, i have tried running it as administrator, i always do.

Thanks in advance