Making an RSS feed for Blog entries
 

I would like other people to be able to use RSS to 'see' my phpWebsite Blog entries, but when they try to subscribe to www.mysite/blog, they get the message:

You have followed this URL, but we couldn't find a feed for it. Please check that the URL is correct

Well, fair enough... and I realise that the other site is expecting to find some RSS XML, but is this something that phpWebsite Blog can generate, or do I need to use some third-party software such as feedforall.com ?