Yep, for RSS 1 try this post:
https://vborg.vbsupport.ru/showpost....&postcount=384
Edit: Oh, it didn't make sense!
Basically, there's a chunk of code in the journal.php to create .txt and .xml feeds, which are pretty basic and/or not valid. You put in the code from the above post after the xml if block, and make the other changes mentioned to your navbar template. Not sure if this is any clearer but others have installed this so if you reply here hopefully someone (or I) can help.