Units of hours on Timeline

[baga]

Hello all,

W2000Pro Visio2000 SR1

Very new at Visio...

I would like to create a timeline charting IT activity
(backups, file copies etc.) that occurs throughout a 24 hr
period.

Seems pretty basic but I can't seem to find a way to
create a timeline (or any other format for that matter)
with units of hours. Everything I try forces me into
units of days as the smallest time interval. Is there a
way to go around the "wizard" and create a timeline with
units of hours?

Thanks