ummmm
Possiblities:
1. The dll is patched
2. The dll isn't compatible with whatever gunz version you are using, what is
"u-gunz.exe"????
2B. The dll is compatible but you are injecting into a wrong process ?
mmmmm, hope it helps... don't really understand your problem there.... there should be a "gunz.exe" process your injector will pick up on