You need to find a titanium client yourself. Whatever means you use to acquire it is left up to you, however it wont be linked from this forum or associated webpages.
Best bet is to get on Amazon, and purchase titanium everquest for roughly 20$. Alternatively you could go to eqemulator.net and ask around their forums. Might find someone a little more loose lipped on other methods of getting the game.
Hope this helps a little!
On the everquest website? Probably a small patcher file to DL, which will download whole game to selected destination. I am pretty confident that you will have issues if you use the underfoot client, due to zone upgrades in some expansion releases.
If you have an active account with Sony, then use this link.
The CD's are no longer needed to install our SOE games. You just need to download the launcher for the game, sign in, and the download will start automatically. The launcher will then download all available updates and content each time you log in.