>We have hand-held computers that only understand Lharc v1.13c. At this time, a series of files are compressed into data.lzh which is renamed appropriately using a DOS batch file that is generated by a Clipper (DOS) application. When the Clipper app, executes a VFP app, which executes the batch file on an NT 4.0 sp4 system, I the lharc "thinks" that the target folder disk is full and leaves the temporary file in the TEMP folder. If I run the same batch file by dbl-clicking in Explorer or from the DOS prompt, everything works fine. I'd like to have the ability to add an lharc algorithm to my VFP app.

Sorry, I don't know anything about the algorithm behind lharc.

If the batch file works OK from a command prompt, it should be possible to make it work from VFP. You could investigate setting up a .PIF for the batch file which can specify memory settings, etc. Or you could try running it using Ed Rauh's API_APPRUN class here in the Files section.