+1 from me too.
I thought all the dicts were just stored on one of the read only partitions and were msdict format. couldn't you change he partition to be read/write and then load up an msdict formatted dict onto it. I remember something about how when people were generating msdict dictionaries one of the freeware packages used shiftjis for indices (when making japanese dictionaries) and this wasn't compatible with the prs-t1 as it needed to have a unicode index. Anyways if someone has a prs-t1 and gets it too work. Please post how they did it.