We are developing a game for our thesis. The images I used in my blender disappears when I transfer my file to another laptop. I need to import those images all over again. What should I do so that it would be save? Does blender have like a library just like in flash?? Please I need your helpp guys! This is for our thesis.

Just a thought, blender pulls images from files to blender but the images are not saved in blender. Try making a project folder and make a folder set as pictures inside. Then copy all the pics you use to that folder then set them in blender. So when you have to transfer the file, just move the entire project folder. All the paths in the blender file should stay inside that project folder.
I had a similar problem. Test it on a small file first to see if it will work, blender continually changes.
Hope that will help
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I believe you can also pack the files into the .blend with

File > External Data > Pack into .blend

Of course, this has the potential to make your blend file extremely large.
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Spacemice / Blender Compatibility