ROM Hack Mario Kart DS item textures help

[ComboOfWombo]

I'm trying to change all the item graphics to their beta equivalents, and I'm using the Green Shell as a test, but when I save the changes to the ROM and load it up on my R4, the game acts like no changes were made AT ALL! Can someone tell me how to fix this?

EDIT: I fixed it. I was trying to replace the files directly to the ROM, when I should've been extracting the .carc and replacing the NSBMD's manually! Mods, you can close this!

 

[cullin]

I've been trying so hard to change some item textures and I haven't figured it out yet. Do you have any advice on how you modify the files?

 

[MossieMurphy]

I also So, I don't know how to fix them.

 

[cullin]

I also So, I don't know how to fix them.

I figured it out myself btw, I'll break it down for you:

STEP 1: Download New Super Mario Bros. Editor (I can't post links cuz i just made this account)

STEP 2: After extracting the files, open NSMBE and find + open your Mario Kart DS rom

STEP 3: Go to root, data, then double-click the box that says, "MainRace.arc". From there you go to root, item, then you'll find yourself all of the items in the game.

STEP 4: once you've clicked on the item you wanna edit, you'll be met with a nice little sprite editor!

If you wanna replace your sprite with an already made image, hit "Import this bitmap and recreate pallet" and then find the image you want to use. After all that, just hit save and you're done!

(I replaced the bomb texture with a C4 explosive from counter strike)