PGP key server

Hello! A small company of 25-35 people needs to set up PGP for everybody. The server solution that is offered by PGP corp is too expensive route, so the individual route has been desided to take. But still some key management or at least distribution is needed. Question is: how should the public keys be distributed to the world? 1) Upload them all to the web-server? 2) Upload the "master" key to the web-server and then just have everybody email their keys to 3rd parties (who can verify the keys as they are signed with the master)? 3) Set up a own key server using SUSE obviously? 4) Just upload all the keys to some public key sever? Which? What would you recommend? -- HG.