some quesitons about install ubuntu

[loody]

Dear all:
I upgrade my unbuntu from 8.04 to 9.04 and I fount my network and
sound card don't work right now.

I intend to install 9.04 instead of upgrading from 8.04 directly, but
it makes me crazy when I think about reinstall all the packages on
8.04.
Is there any batches or config which can help me to install all the
packages I install at 8.04 to the new distribution without typing them
one by one?
appreciate your help,
miloody