It's the universal crack for WinRAR 3.00 beta 6 GUIN/console versions
Maybe it will work with other WinRAR 3.00 beta versions.
Step 1. Run tsrh-wrar3b6uni_crk.exe and patch the original WinRAR.exe
and RAR.exe.
Step 2. Run azl_wrar28_kg.exe to generate personal rarreg.key file.