If you have already visited apple.com or the iTunes Web site, you have probably seen the long, long list of instructions given there to move your iTunes music. However, you can easily accomplish this task with just a CD or DVD, depending on how much music you need to transfer to your new PC.
Step 1. The first step is to copy all your music as data onto a recordable CD or DVD. To find where all your music is located, look in your iTunes files under the My Music folder. - presumably also works with USB stick etc.
Step 2. Once all your iTunes music files have been copied from the original PC, switch on your new PC and launch iTunes (load iTunes onto your PC if you haven't done so already). Before you import your music into your new PC, open up iTunes and click on the Advanced Options tab. Check the option Copy Files to iTunes Music Folder.
Step 3. Insert the DVD or CD with the copied music files into your PC. Just drag the music folders from your CD or DVD into the icon "Library" in the iTunes window. This will copy all the music data from the CD or DVD to your new PC. You can also access the iTunes Library from the iTunes main menu. Choose File, then choose Add to Library, and select the files you would like to copy from your CD or DVD.