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Hmmm, don't want to sound arrogant here, but it took me about 30 minutes to get it working (not looking good of course).
You don't need a deep knowledge of php to convert this module. There are only a few things to replace, because this seems to be a "older" e-xoops-module which makes no use of "deeper" exoops-core-functions.
$db -> $xoopsDB
fetch_row -> fetchRow
num_rows -> getRowsNum
fetch_array -> fetchArray
IRAD_URL -> XOOPS_URL
IRAD_ROOT_PATH -> XOOPS_ROOT_PATH
_PHP_SELF -> $PHP_SELF
add some missing language defines and you are nearly done!