I managed to solve the problem last night.
After trawling through many MS forums which turned out to be dead ends I found one with a nugget of info. that gave me the solution. Here it is.
In my case comctl32.Ocx was missing completely. So I had to download it. I obtained it, as recommended directly from Microsoft, it was packaged in Visual Basic 6.0 files (many spurious sites offer it). I extracted the file using WinZip and then placed the file in the C:\Windows\SysWOW64 AND C:\Windows\system32\ folders, this was the key bit of info. Many forums reported that the file should be placed in the C:\Windows\SysWOW64 folder, but did not mention the need to place it in the C:\Windows\system32\ folder.
Then, running the DOS CMD (I don't use UAC but if you do, you need to run CMD.exe elevated (right click and run as administrator)), you enter the following commands
1) Regsrv32 C:\Windows\SysWOW64 Press enter. You should get a success message.
20 regsrv32 C:\Windows\system32\ Press enter. You should get a success message.
I then ran FDC, tried the Voice selection and it worked!! The check lists now work across the network.
Not a common problem but, if this helps someone else, great.
Thanks for trying to help me out.
Regards
Dave