Mickey,
Thanks for your help, but that didn't work:
ipkg install -V 3 http://www.openzaurus.org/official/unstable/3.5.3/feed/opie/irk_0.11-r2_arm.ipk > ~/irk-install.txt
Downloading http://www.openzaurus.org/official/unstable/3.5.3/feed/opie/irk_0.11-r2_arm.ipk
pkg_info_preinstall_check: updating arch priority for each package
pkg_info_preinstall_check: update file owner list
best installation candidate for irk
apkg=irk nprovides=2
adding irk-belkin to providers
adding irk to providers
replacement_apkg=irk for provider_apkg=irk-belkin
replacement_apkg=irk-belkin for provider_apkg=irk
Configuring unpacked packages
Nothing to be done
An error ocurred, return value: 4.
Collected errors:
Cannot find package irk.
Check the spelling or perhaps run 'ipkg update'
hash_table[pkg-hash] n_buckets=0 n_elements=4225 max_conflicts=0 n_conflicts=0
hash_table[file-hash] n_buckets=0 n_elements=2469 max_conflicts=0 n_conflicts=0
hash_table[obs-file-hash] n_buckets=0 n_elements=0 max_conflicts=0 n_conflicts=0
I've also tried downloading the file directly to the Zaurus and installing via ipkg on the command line locally.