there is a ".txt"file in the "crack" folder. you can follow these steps:
a) Install (setup.exe in Setup directory).
b) When asked for the registration disk, point to USERDEF.PUF in crack directory
c) Choose setup type "personal computer installation". Install also the hardlock drivers when asked.
d) Install the update to v8.2 (setup.exe in plaxis_8.2_update directory)
e) copy batch.exe, geo.exe, plaxout.exe, hlvdd.dll into installdirectory (overwrite existing files)
f) It might be necessary to delete the original hlvdd.dll in .../windows/system32 (for XP) respectively .../winnt/system32 (for W2K) and/or copy hlvdd.dll from crack directory therein too