Trying to run a batch file on a UNC path

I'm running a pretty simple script that loops through names on machines, and runs batch files.  Here's my code:

        Dim RetVal1 As String
        Dim RetVal2 As String
        RetVal1 = Shell("\\" & Cell & "\c$\Java\bin\service\StopServerService.bat", 1)
        RetVal2 = Shell("\\" & Cell & "\c$\Java\bin\service\StartServerService.bat", 1)

I keep getting a message about UNC paths not being supported.  I could swear this that was working last week!!

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