Hello and welcome.
You have to download the Mod Tools either located here or on ModDB (just search up SWBF2 mod tools, or whichever game you're using). You would have to modify the tga texture for the ones you want to replace, and odds are you'll just munge (compile) a brand new side .lvl file or if you do want to use the replacement, then you would have to go into the _BUILD_PC folder and find the appropriate .texture file, which you can then insert using his tool.
Is it simple? Yeah, but does require some legwork to get from start to finish. Feel free to take a look at some of the other side editing tutorials on the website to get a better feel for it.
You have to download the Mod Tools either located here or on ModDB (just search up SWBF2 mod tools, or whichever game you're using). You would have to modify the tga texture for the ones you want to replace, and odds are you'll just munge (compile) a brand new side .lvl file or if you do want to use the replacement, then you would have to go into the _BUILD_PC folder and find the appropriate .texture file, which you can then insert using his tool.
Is it simple? Yeah, but does require some legwork to get from start to finish. Feel free to take a look at some of the other side editing tutorials on the website to get a better feel for it.