Hi John,

Regarding # 1, this is what I use to check for other windows with the same title.

cSearchFor = UPPER(ALLTRIM( "YourMainWindowCaption" ))
nHWnd = GetDesktopWindow()	&& API
nHWnd = GetWindow(nHWnd, 5) && API - Get first child window
nNext = 2
lFound = .F.
cTitleBar = ""
do while NOT lFound
  if NOT EMPTY(nHWnd)
    cTitleBar = SPACE(200) + CHR(0)
    nTextLen = GetWindowText(nHWnd, @cTitleBar, 200)  && API
    cTitleBar = UPPER(LEFT(cTitleBar, nTextLen))
 	lFound = (cTitleBar = cSearchFor) 
    if NOT lFound
      nHWnd = GetWindow(nHWnd, nNext)	&& API
    endif
  else
    lFound = .T.
  endif
enddo

return (lFound)

The API call declarations are all that you'll need to get that working, but they're easy to find on news2news.

Regarding # 4: I use a launcher application to drop the main executable to the users temp folder and launch it from there. If the executable is large, this could take a moment or two. To remedy that, I only invoke the copy if the exe isn't already there or it's has a different date/time stamp than the network version. As a side benefit, you never have to kick anyone out to update the network executable. By running it form the local drive, the network instance is never the one that's running.

Hope that helps!