Install without enabling any node types by using php snippet instead?

Step 7 in the INSTALL.txt file states that to use phpfreechat, one must first enable phpfreechat on a node type, either a new type made via flexinode or CCK, or on a core node type. But I don't want to install flexinode or CCK and I don't want to enable chats on any core node type. All I need is a single, site-wide chat page. Is there a PHP snippet I can insert into the page I want to have chat on, that will enable a site-wide chat on that page, without requiring enabling phpfreechat on a node type? If so, please post it.