I'm pulling the "stop being such a prick in your criticisms card".
I used milkshape for almost a year before I was moved up to 3ds max. I didn't have to google it, because I knew it. If you can't do it properly in milkshape, get a 3rd party program. Stop being so childish and try and make use of criticism, instead of brushing it off as personal attacks.
No one can.Milkshape doesn't possess the proper functions to tweak normals like other programs.
About 500.
That's more than overdoing it.
I'm sorry, but that is just my style of modeling, and for all those details you pointed out, it will only bring it down about 20 polys, I would rather have the detail.