Hi,
Sorry for the delay in replying. Snowed under with work.
I'm using the Mountain Lion and Saratoga's scripts, without problem.
I'm assuming your web server does support php?
Place the WCTtags.php file in the folder you have set as your "Set HTML Source" in the "online" > "Custom Web" section of WeatherCat's preferences.
Place the WCT_realtime.txt file anywhere you like, I have place mined in a folder called "Additional files", the main thing to remember is that you must then go to the "Additional Files" section in WCat and include the path to wherever you have placed your WCT_realtime file. I have set mine to upload every 0.5 minutes, I think Saratoga recommended 0.2 minutes update time.
That's it. Wait for the update cycle to finish, the WCTtags.php file will update with the main WC upload, while the realtime file will upload every few seconds.
Hope this helps, let me know if you need more help
Tony