Here are some tips regarding choice of file formats for media. These tips are not only for netbooks, but should be used as much as possible for any platform development. Of course, you can do what you want.
We all know that netbooks have less memory and processing power than a regular PC or laptop, so we should keep the memory usage as low as possible to leave more memory available for anything else than media.
* Use the .jpg file format for any image that doesn't need transpareny. The resolution of a .jpg file is as good as a regular .bmp (bitmap). Just to prove my point, here are two identical images. One is a .bmp, and the other a .jpg file. The file size of the .jpg is
three times lower than the bitmap. And, as you can see, there's no difference. If you can spot any difference, than let me know. That would mean I need glasses.
If you have a decent paint program, than you should be able to optimize the export settings for .jpg files. If you cant change the export settings for .jpg files, than a good alternative would be .png files.
* For images that require transparency, the best format (in my opinion) is .png. Or, also the .tga format.
* Keep the size of your images as low as possible, especially for textures. If you have textures of 512x512, scale them down to 256x256, or even to 128x128. You wont see the difference. But the filesize would be less.
For textures that only have one color, you can even scale 'em down to 32x32.
* 3D models for netbook games need special care in terms of polycount. The lower, the better.
Use the .DBO format if you can, and if not, the .x format.
* Clone or Instance your models wherever possible.
* For sounds and music, I would advise to use the .ogg format. The filesize is low, and the quality is as good as .mp3 files.
Keeping a lower frequency will also reduce the filesize of your sounds and music.
Cheers
SLAYER RULES! YEAH, MAN!!