Well itunes installer can be put on the memory stick and you can install it on another computer but as far as I have tried you cannot put itunes from program files and move it to another computer.
The main reason for that is that even if you were able to move itunes via memory stick onto another computer, your music will not move, thus it would be wise to install a new setup of itunes on another computer.
Do you need help moving iTunes music to another computer?
