#1 Get an emulator.
#2 Get some roms.
#3 Run the game.
#4 Use the emulator's tools to blank out the background.
#5 Take screen captures of each frame of each individual animation.
#6 Open in paint/photoshop/etc. and form into a single sheet.
#7 Your done.

#1: Where can I find one and how do I use one?
#2: Where can I find some and how do I use them?
#3: How?
#4: Gonna have to get through steps 1-3 to find that out.
#5: How?
#7: Kool.

1-The internet. They come with Readme files.
2-The internet. Read the readme file with the Emulator.
3-Use the emulator.
5-Depending on which emulator you got, it may have an option to save a screen shot. If not, press ALT-Print Screen, open MSPaint, and click EDIT and then PASTE.
7-Yes, yes it is. ^_^
And, before you ask, I'm not going to tell you where to get roms and emulators, as they are technically illegal.

So I guess I'm gonna go on a search for an emulator?

One that plays games/roms from whatever system you wanna rip sprites from, yes.

Is there any key words I should put to find the right emulator?

What system are you looking to illegaly emulate?

Well what was MK2 on? SNES right?

It was on SNES, as well as Genesis, Arcades, etc. So, if your looking for SNES emulators, I suggest typing in "SNES Emulators and Roms" in Google. ^_^

*Sigh*

If you want MK sprites, just go to the MK Warehouse.

If u havn't noticed yet, they dont have MKII Sub-Zero sprites and those are the ones I want. I get all my sprites from MKW, but sometimes they dont have the ones I'm looking for.

Pallette swap Scorpion...

I dont have Paint Shop.

... Which sprites do you need?

To rip SNES sprites, get ZSNES. It's an emulator that allows you to remove backgrounds and/or sprites and take screenshots.

To rip MAME sprites (those are the one that MKW uses), get MAME32 and AceKombat's cheat file.

I think it's not allowed to link to emulation websites, but if you need any help finding those sites, IM me. EDIT: Don't try to get all this shit if you only plan to "rip some sprites" once or twice. It's too much explaining for that. If you rely on MKW for sprites, just wait or ask someone else to rip stuff for you.