I thought that the Henteges 'ROM' used Opie for the UI...?
In any case, do 'ipkg update' and then 'ipkg list' to see what's available (there will be lots of output) from the standard feeds (all of these apps will run on the Henteges flavour, assuming it's the latest one). No matter whether it uses GPE or Opie, the feeds should be setup so that it will read from the correct one.
You can also use wildcards - 'ipkg list *opie*' and so on.
Si