Have you tried the last one on this list.
http://pda.jasnapaka.com/prssr/FAQ.p...-props-of-site
New site template
These settings are located in HKCU\Software\DaProfik\pRSSreader\Site\
Those are the default values that are set for newly added site (to save the time with setting site properties).
* Cache Enclosures [DWORD], 1 = yes, 0 = no,
* Cache Html [DWORD], cache online conetnt for offline browsing: 1 = yes, 0 = no
* Enclosure Limit [DWORD], enclosure limit in MB, enclosures larger than this limit are not cached
* Store Images [DWORD], cache images within feeds: 1 = yes, 0 = no.
* Today Show [DWORD], show the site on today screen, 1 = yes, 0 = no.
* Update Minutes [DWORD], interval (in minutes) the feed is updated, 0xFFFFFFFF (= use global update interval)