Display different command buttons if...

[an]

Hello!

I have many data to append in different dates, but only
one time for year, and many data to append hour to hour.
I think to make two distinct tables to append different
frequency data. T_HourData and T_YearData.
I think to make a Form where I would like to display one
command button (to run HourAppendquery) only through
different field condition.
Ex:
If HourData=YES, display command button in Form (to run
HourAppendquery).
If HourData=NO, don't display this command button and
display another command button (to run YearAppendquery).

I don't know if is it possible in Access2K?

Thanks in advance.
an