Thanks Andrew,
I went and edited the code and restarted the server. Worked fine, but in the process I discovered that images in an entry are not included in the generated feeds 😟.
Just noticed that Lars added it as a parameter that can now be set using the admin UI (now all I have to do is update my server).
http://xarg.net/tools/cvs/change-set-details?key=63812F5CCEE3FB1E9391DB7639436347A23CF48F
(Thanks Lars)
As for the feed image, that was MUCH easier than expected... it turned out it was already a parameter in the admin interface: http://openacs.based/blog/admin/
