>I have the following code in Click event of a button
>
>lcDocument = "pcbOil.doc"
>ThisForm.Printdoc(lcDocument)
>
>The custom method PrintDoc on my form is as follows:
>
>PARAMETERS lcDocument
>oWord = CreateObject("Word.Application")
>oDoc = oWord.Documents.Open(lcDocument)
>oDoc.PrintOut()
>
>At the startup of my app, I establish the path in my Setup.prg file as follows:
>SET PATH TO &gcPath
>
>gcPath is assigned a value earlier of h:\labtemp;h:\upsi;h:\labnav
>
>How do I make the line:
>
>oDoc = oWord.Documents.Open(lcDocument)
>
>properly search a subfolder beneath the folder h:\labnav named \letters for the file pcbOil.doc.

Combine file() and fullpath():

if file(lcDocument)
   lcDocument=fullpath(lcDocument)
else
   do what you do when file isn't there
endif

File() function will find your document anywhere along VFP path, and fullpath() will give its absolute path, which you can then submit to oWord.Documents.Open(lcDocument).