i have unpacked a few pecompacted dlls in the past and i havn;t had any problems with a program not starting up when i did it.. Loaded the dll with olly and loaddll.exe then used the ESP trick.. (f7 till call, d esp, HWBP Access Dword).. loaded up imprec.. choose loaddll.exe.. then clicked pick dll.. picked the dll and fixed the iat. With this way i never had anyproblems with packed dlls.. hope this helps