How to group tasks by category in Windows Mobile 5?

I've just upgraded from smartphone 2003 se to windows mobile 5 (orange
spv c500 to an i-mate kjam) and i was using developer one's power tasks
for my Smartphone as it allowed me to mimic outlook by grouping tasks
by category - can task grouping be done in wm5 without a thirdparty
product? if not, any recommendations?

thx,
jas

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