Смотри что есть в хелпе:
Use internal ZIP - packer
Use the ZIP packer built directly into Total Commander. After packing the ZIP file is automatically checked for errors. This can be aborted without the ZIP being deleted. The check can be disabled entirely by setting VerifyZip=0 in wincmd.ini, section [Packer].
Use internal unzipping
Total Commander has an internal unzip written by Info-ZIP, which allows unzipping without requiring pkunzip. To use it, select this check box. If this box is selected, the internal unzip is always used, except for encrypted files.