For installing Dota you will have to install the complete game, i.e., Reign of chaos + Frozen Throne.
Install the Reign of Chaos 1st from the disc 1. (gany’s disc doesnt have a cd key for this, so use this key “F3ECV5-5786-2VE0BI-8A89-8D27A1″
The second is to install Frozen Throne, install this from the second disc. The key for this is “728Y2W-B292-X7PCXZ-PPDX-PKCN72″
Now that you have installed FT, you have to patch it. Don’t use the patch in the that disc, Get the commonly used patch in India to play in Garena
War3TFT_120e_English.exe (48 mb file)
Once you have downloaded the patch, run it by just double clicking it, it should patch by itself.
Now you should Crack the game. Copy the contents of the crack folder and paste it in the game folder(the place where you install the game) and replace the game files(choose “yes to all”)
Finally the Dota map should be installed. Download the DOTA map here.
Now open map folder contained in the game folder. Check whether there is a folder named “Downloads” in it, if not create one. Open the “Downloads” folder and paste the Dota map inside it.
There you go! You have successfully installed Warcraft III completely + Dota.

Note: Now there will be 2 icons in your desktop, one is the Reign of chaos icon and another one is the Frozen Throne icon. If you are a newbie to Warcraft, start playing campaign in the Reign of chaos so that you will learn the controls.

If you want to play Dota. Run Frozen throne and join the LAN game, Dota is meant for playing Online, but if you want to play the game with Bots and practice you need a Dota AI map. Copy paste the map inside the Downloads folder in the map folder.

Dota with Bots:Now Run Frozen Throne and choose single player >> custom game >> browse and choose the Dota AI map>>add Bots>> start the game.

Warning:Make sure that you have Patched the game before craking it. pasting the crack before patching won’t work.