Yes, you can have several iPods on one computer.
Not really a good idea.
You can't transfer the music for iPod to the computer unless you transfered the music to the ipods disk before. (to transfer music to the ipods disk you have to go to my computer/iPod/--what ever ipods file you have--/and put it on there) after you transfer the songs you want to the ipods disk you can then transfer only those songs onto a different computer. Itunes doesnt allow you to use more than one library that's why you have to put the songs on the "disk" first.
ipods can only sync with one computer at a time.
When you plug in both iPods, each should be recognized as a separate removable drive from one another on your PC. Go to computer and open both of the iPods. Then, just drag the music between the two.
4 Because I have the forth one and none have come out yet
There are various solutions for using multiple iPods with one computer. Apple has a support page describing the options (See links below).
Try taking the harddrive out and if it is still intact you can put it in a different working computer with the same size of harddrive
There are various solutions for using multiple iPods with one computer. Apple has a support page describing the options (See links below).
Of course iPods are much more better.
Jumpers control the hardware devices of the computer system without the use of software. There are different jumper sizes with the most common one or two sizes found on the computer.
There is no "regular" iPod touch, because they is a new one each year. Most iPods have different shapes, and cases for one will not fit another. Only the 2nd and 3rd generation iPods have the same physical shape.