Splash screens

[sricke]

I want to change my main splash screen. Not wm or sprint (my carrier), I flashed a rom awhile ago, and it changed my main splash screen. I do not like it. I found one guy's system for creating and flashing all 3 splash screens but it won't run on Vista.

Could someone please point me to the right tools with instructions. I will say this, I am not very smart because search never seems to get me what I need, so with that said could someone point me in the right direction?