crysis multi exe

[spikeyredcactus]

for the no cd crack, i have found one that supposidly is no cd for 64bit exe aswell but when i replace the exe with the cracked one(crysis.exe renamed to crysis64.exe to replace crysis64.exe in the bin64 dir) it displays the error message cant load dll. if i replace the other file named the same as the no cd crack then it just crashes with a send error report.
What am i doing wrong??
i have xp 64