Check out this site they have howto's on cse modding. I got alot of great ideas from them when I first started to mod my cases.
http://www.7volts.com/casemods.htm
One of the things that I had done to an older case I had was to stencil my online name on the side. I bought a pack of the normal stencils at the local craft shop. I painted my case flat black and then used flouresent orange for my name. I used almost a whole can of the orange, I just applied coat after coat, letting it dry between. When I was done I had raised letters. That was fine for a bit but decided that I needed something diff so I sanded the paint with 400 grit sandpaper. ( I did not go all of the way through to the metal) I then cleaned it, painted it with flatblack spraypaint and sanded again. I did this about 10 times then used the orange again only this time I was a good 2 feet from the case and did short 1 sec bursts so that I got a speckled look to it. I then used a clear coat to finish it up. The end result was a nice shiny paint job with embossed letters on it.
Unfortunatly I tried my hand at putting in a custom window and messed the whole thing up.
If you use a dremel just take your time. My issue was not with the dremel but with mounting the plexi glass. I still have the case. (future project for rainy day) I can take some pics if you want to see what it looked like.
korgul