Samsung u 740 calander recurrance feature

I just bought a u 740. I want to set us a calender event beginng 3/17/2008
@ 9:30 Am and ending at 11:30 am. I want this event to re-occur every week for 6 weeks. I assumed that putting in the start date of 3/17 and the end date of 4/21 with an occurence of weekly would do the trick. But I get an error message. I called Samsung and after working with the level 2 tech he concluded that it cannot be done.

Any ideas would be appreciated,

Lew