Extract a "LZH" archive in 64 bit windows

[captnk]

I receive some data in LZH format (No choice on format) which has worked satisfactorily for years using .LHA or LHARK in a batch file.
eg:d:\Directoryname\RBLHA\lhark e c:\download\Filename -o d"\Directoryname\RBLHA
Ultimately the extracted file gets imported into MSACCESS
This works fine in XP and windows7 (32bit version)
However I understand that "LHA" and "Lhark" are 16 bit programs and as such wont run in 64 bit windows.
I would like to move to 64 bit windows in the near future.
Has anyone got an ideas/suggestions how I can extract an LHA/LHARK file in the 64 bit version using a batch file (or other ideas?)
Captnk

 

[Galaxiom]

7-Zip is an Open Source zip tool that supports many formats including LZH.
They have both 32 bit and 64 bit versions as well as a commandline interface.

http://www.7-zip.org/