Splunk does not care where you install it - you could install it under C:\SLowry and it would work. However, once it is installed on Windows, wherever it is, don't move it. Splunk installs a service on a Universal Forwarder (UF) and that's why moving Splunk is a bad idea.
On a UF, the installation directory ($SPLUNK_HOME) defaults to C:\Program Files\SplunkUniversalForwarder . (I think this is your case.) You don't need C:\Splunk\etc\apps . There will be a directory C:\Program Files\SplunkUniversalForwarder\etc\apps - that's where the Splunk_TA_Windows directory should go. So you should move it there (local directory and all).
Finally, the configuration files appear to have nonstandard line endings for Windows. In text files, Linux ends lines with LF but Windows uses CRLF. All the files whose names end in .conf will be like this. Notepad will be confused, but I think Wordpad or Notepad++ will handle this correctly. I know that Komodo Edit (free version for Windows) will handle and convert line endings properly. There are other tools out there that will do the conversion as well.
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