Yes, you can put on a new one. I have seen 20 gigs going on eBay for $40-80. To install, unplug all wires from the 360. On the top, you should either have a panel with holes in it, or an old hard drive. There will be a button, push it and the old hard drive should pop off. Put the new hard drive in by just popping it in, like how you took the old one off, just backwards. Hope this helps! For more specific instructions, I used eHow.com. Just type in your question.
In short: no. The Xbox 360 has to install an original Xbox emulator program to run the Xbox games. It stores this emulation software on the hard drive.
Yes, but you won't be able to install the game or any DLC to your console.
You cant.
Microsoft let you install the game to your hard drive to have better quality and more faster performance in the game therefore you still need the disc
you should always be able to play online without installing a game
select your game libary from the xbox 360 dashboard and choose install to hard drive
If you have a Xbox 360 you can install it to your Hard Drive
Insert the disc into the xbox, then go to your game library>GTA IV>install to hard drive.
250gb if you can afford it, if you buy a 4gb you will need to buy a hard drive, A 4gb Xbox with a hard drive will probably cost more than a 250gb
The Xbox Arcade is an Xbox 360 and it comes without a hard drive. What you are calling an Xbox 360 I'm assuming comes with a hard drive and if you are thinking of buying an Xbox I recommend not buying the arcade as you cannot save games without a hard drive.
No, however you can buy the game from xbox live marketplace and the game will be on your hard drive
You put the DVD in, restart, then press Y. press install to hard-drive.