[Lynne]

Well, the forum to ask for a modification to be written is the Modifications Requests forums - either Paid or Unpaid. This forum is the general "can I do this" or "what is the proper setting in vbulletin to do this..." forum and I was answering that you can't do it with default vbulletin. You will need to write a product to most likely - add a new column to the thread table and then modify the external.php page to only 'feed' threads where that column is set to true.

As for only retrieving feeds every 24 hours.... you said you were pulling the feeds from your vbulletin site. So, if you want to change how often you retrieve the feed, you need to modify the script that retrieves the feed, which is not a vbulletin script. I have no idea what script it is, but you can try asking for help on whatever site you got the script from to see about only pulling it every so often.