copy in excel paste in powerpoint

Hi!
(Office 2000)
I have a big table in a worksheet in excel and I want to
display some of the cells from the table in a powerpoint
presentation (the presentation already exists, it doesn't
have to be created from zero).

I want to display this cells, as an updatable link, so
that if there is any change in the original excel table,
this will be automatically updated in the powerpoint
presentation.

This can be done manually with copy in excel and paste
especial in powerpoint as a link. But, I want to do this
with a macro, not manually. The problem is that I don't
know how to programm it.

Any idea?

Thanks