Hi,
To add the printer to the e-smith server, just add it through the web page. It will then appear in your list of shares on the e-smith machine when viewing it through Windows. No driver is needed on the e-smith server because it just sends the data to the printer - unlike other systems such as Cups. You will need to then install the printer on your workstations, suplying the driver as required (I did this using another share) - also the users will need to have accounts on the e-smith server in order for them to print, and the passwords must match.
Andrew.