workgroup domain conversion

i am converting a workgroup to a domain with about 35 computers and 4 mid to high end printers.

i have a general understanding of whats going on here, but id like to know more.

when i create the domain structure, how do can i publish printers to the domain, for easy searching?

once its published, how do i find it?

also- im converting our email server from visnetic mail server to exhcange, can someone give me somewhat detailed steps on how to do that?

thanks in advance.

Kevin