When you changed the icon of the folder you might have pointed to a file in windows containing the icon image.
Once the said folder is copied to the CD and then again copied to another computer, the folder will look for the custom icon image in the same location where it was in the first computer. If the file containing the icon is not there in second computer, you will not see the custom icon as it defaults to the windows folder icon.
To avoid this you can save the image of the icon to a .ico file and include this .ico file along with the folder. Whenever you copy this folder to a different computer, you need to copy the .ico file also. This will make the folder retain the custom icon.
My Computer
At a glance
MS Windows 7 Ultimate 64-bit SP1i5-2410M 2.3GHz (2.9GHz Turbo-Boost) Sandy Br...4GB+4GB Samsung DDR3 PC3-10700 (1333 MHz)Video Intel(R) HD Graphics Family, 1696MB ava...
Video Intel(R) HD Graphics Family, 1696MB available memory
Sound Card
Realtek High Definition Audio version=6.0.1.6323
Monitor(s) Displays
17.3 " Trubrite TFT LCD, LED Backlit
Screen Resolution
1600x900 32 bit, Native support for 720P content
Hard Drives
TOSHIBA MK6476GSXN
580.614 [GB] partitioned C: 80GB and D: 500GB with hidden recovery partitons.
Spare bay for 2nd HDD but no SATA connector :-(
PSU
Toshiba AC/DC Adapter
Case
Notebook
Cooling
Built-in Fan
Keyboard
Premium Raised Tile keyboard
Mouse
Logitech M215 wireless mouse
Internet Speed
Not fast enough
Other Info
Built-in Harman Kardon speakers with Dolby Advanced Audio, Waves MaxxAudio® 3. HDMI, 1xUSB3+3xUSB2 ports, WebCam, Battery life 4hrs 11mins, 4GB Readyboost SDHC card, WD My Book Essential Ext HDDs 2 TB, 2x1TB, My Passport SE 1TB and WDTV 1st Gen for Multimedia playing on a Sony Wega 32" LCD.
Recent addition to my toys are Asus Transformer Pad TF300T with 32GB onboard sd card + 32GB microsd card.
I edit the Desktop.ini files in the folder I wish to change, after changing it using the built it customize tab. It's really simple: Change any line that has the full path to just the icon name. For example; "G:\Imaging\Photoshop Resources\Tutorials\Tutorials Folder 1.ico" would be changed to simply "Tutorials Folder 1.ico". This works for CDs, flash drives, external HDDs etc. If you add the line "IconIndex=0" it will work in every windows version back to at least XP.