Do not use nair or veet or anything similar. I know way to many people who have had to be treated by chemical burns when using these products in the pubic area, balls, and dick.
If you just want to trim them, use an electric trimmer.
If you want to get rid of them completely, trim them first with an electric trimmer then shave them. Go first with the grain to remove the bulk of the hair and then against to give you that clean, smooth look. I recommend you take a bath when you do this, shave while in the tub filled with warm water. Also then you don't need shaving cream, but its up to you. If your looking for a good razor, a recommend gillette mach 3 turbo. That's what I use and it's great. Just be sure you use a new razor/cartridge/blade each time you shave.
The first time it may itch a little but usually only after the first time. I recommend you put a little bit of talcom powder on the area after shaving there the first time. Also give it atleast a few days before shaving again (about 4). Otherwise you could end up with some bloody sores.