MSDOS PATH setting and overlay files

[Graham Brand]

I have heard that there is a public domain program which allows the
setting of the PATH variable to apply to any file (i.e. overlay files)
instead of just .exe, .com and .bat files. Does anyone have a copy or
know where to find it? I have an ATT 6300 with 1 360kB floppy and 1 20MB
hard disk running MSDOS 2.2. 

Thanks in advance,
Graham Brand   .....!hplabs!ucbvax!jason.berkeley.edu!brand