Scratch

ssss wrote:

On windows XP I'm trying to make the Guest account into a very useless account i want to:

~ Disable Saving    Didn't i tell you i wanted it to be pointless?
~ Disable CMD    Well - can't have hackers, can i?
~ Block sites    Surprisingly enough, don't take this the wrong way!
~ Add A few programs

Please tell me how to do each 

I'm not sure about if you can disable saving. You could block all saving access to the hard drive and only allow external drives (You could block that too).  I would suggest that you have the account restore all changed settings to how it was left (My school did this and it stopped them having to register each machine because each time you start it up it thinks it's the first time it has started).

To block access to a file / program right click on it go to security and choose the account / account types you want to block.

Blocking sites is fun there are two ways. Through a web browser or through a network file located on the computer (Disables all account access even admin).

Programs are easily added. Most main programs add themselves to every account.

Why don't you just do some research on the net for tutorials for the OS and web browsers that you are using.