Fetching past tweets using twitter tools

I just installed the Twitter Tools plug-in, modified it to suit identi.ca and integrated it into my journal. It appears to work—it fetches recent tweets and pops it into my journal.

Does anyone know of a way to instruct it to fetch tweets starting from a date in the past? I would like it to bring in 150 or so past tweets; not just the ones posted since the installation.

Thanks!