eeprom tools works in XP. i tried it twice. the first one it ended up saying "sim data could not be updated" or something... but did the job anyway. second time, worked like a charm!
anyway i always recomend 1 instalation of good (i can't belive i just said this), ol' (very) but reliable w98... even if it's on a 2nd disk. that will always work for sure.