I need to install Cisco Call Manager in a lab so I can get familiar with it before we go live with it. I have a Compaq server. When I put disk 1 in and boot the server, I get a message 'The OS version that supports the detected server is 2000.2.4'. Is there a way to get past this block? If I need to get 2000.2.4, where can I get it and how much will effect CCM 4.1?