I would like to know if anyone has a idea for a design? Nothing too ridiculous, but I don't want it to be boring. It is a rosewill Challenger case, and the window will be where the fan spots are at.
Well, you are only limited by space and your imagination. I would stick with a color theme, like not using red fans and blue fans together or too many colors.
Once you've decided on a theme, then consider dimensions. Do you wantr a small window just to view the CPU fan and maybe the graphics card? Or do you want a full window?
Here's a couple of sites to get some ideas:
Both have lots of modding stuff including tutorials. good luck!