I have the same problem, you just have to be patient and avoid clicking everywhere on the screen because it makes it take longer than it needs too.
iTunes
Macs come standard with iTunes. For Windows computers, iTunes can be downloaded for free at http://www.apple.com/itunes/download
When you download a song on iTunes, it doesn't download to multiple computers at the same time.
You can download iTunes by going to this website: http://www.apple.com/itunes/download/
The iTunes application is available for the Mac and computers running the Windows operating system. The iTunes mobile app is provided with Apple's iDevices (phones/pods/pads). Users of other phones can use apps such as DoubleTwist, iTuneMyWalkman, iTunes Agent (See links below) to synch their phones with their computers iTunes library.
There is a Sharing section in the iTunes Preferences. Tick the Share my library on my local network. Other computers with iTunes will then be able to find the music in your library.
Just download a new Itunes to the other computer. The musics stored in the former computer you can move into a pendrive and tranfer them to the other computer.
Your computer might be slow. Slow computers cause accidents and sometimes you have to download JAVA.
go to www.apple.com/itunes/download/
if you have a iPOD you can download it on itunes if you have a iPOD you can download it on itunes
Download the itunes installer from http://www.apple.com/itunes/download/ . This works for xp and vista.
To download iTunes you need to go the iTunes download page and click on the Download Now button (See links below) .