You have to get a mac book laptop or desktop
There is no version of iChat for Linux.
iChat uses the AIM network so to talk to people without iChat they will need to be on the AIM network. (See links below) .
ichat cost $29.00 to buy!!
Apple does not make iChat for iPad. But if you have an iPad 2 or newer, you can use FaceTime which is very similar to iChat.
"You cannot use ichat for Windows. Ichat is used with Mac, but you can use AIM with Windows and comunicate with Ichat on Mac. You will also need internet."
There is support for iChat on the Apple website, under the support option. They offer support for iChat when it quits unexpectedly, when the video chat is not working, and if you are unable to invite while in iChat.
In iChat, go to the top menu bar. Click "iChat" on the menu bar and then click "Change My Profile".
The Dakota font may not be supported by iChat, or there may be compatibility issues between the font and the iChat software. It is recommended to use a font that is known to be compatible with iChat for better performance.
most likely all macs come with ichat
iChat uses the AIM network so a Windows user with an AIM account (See links below) will be able to contact a Mac user with iChat.
iChat is not an available feature on the iPod Touch. There is facetime for the new iPod Touch (fourth generation), but iChat is strictly for Mac laptops and desktops.
open ichat. click 'ichat' and then 'preferences' then click 'accounts' there should be a + sign, click that to make a new account