It really depends on what emulator you want to download.
On a side note, it is illegal to download ROMs for gameboy, psp, and alike.
Yes there are various Pokemon channel emulators that are available for download. Some Pokemon channel emulators are available for free.
No, but download znes and it is safe, small, and comes with free games.
There aren't any out there that can be LEGALLY sold to you. You can download them for free at various sites and risk the chance of going to prison for the rest of your life. Emulators and ROMS are ILLEGAL.
Downloading with 100% safety is not possible but the Emulator-Zone is a good place.
there is an emulator called dolphin. just go to google and put dolphin emulator for wii
The Internet
If you are asking where to get an emulator that includes GameShark, the answer is Brothersoft, which has several free emulators, all with cheat capacities.
They should always be. But, try The Emulator Zone website, it's easy to use, always updated, free as it should be, and safe to download from.
yes they are free and you can get them by searching on google
Yes.
there are many sites, no$gba its actually best nds emulator, try version 2.6a
There are a number of Dreamcast emulators available for download for a PC. Some of the most popular emulators are Demul, MESS, nullDC, and SEGA Visual Simulator.