I have a client with a GoDaddy windows server hosting account. We are putting together a couple of pages that uses a php script. Will this work automatically or is there something to be enabled at GoDaddy?

if you mean their standard webhosting packages;
http://www.godaddy.com/gdshop/hosting/shared.asp?ci=9009
These come with PHP.

Thank you. That link helped answer my question.