No, only RGB and DVI, not hdmi. The add that says hdmi cable frequently bought together is somewhat misleading. I made that mistake. But the quality is quite good the connections are shown in one of the last images. Regards.
I am not personnaly familiar with the Dimension 2400 but, I believe it would work and be a good addition. It is a very bright and very sharp wide screen monitor. I am sure you would not be disappointed as it has standard monitor connections. I am using it with a Dell 660 running Windows 7. It should run fine on your XP computer.