Sorry, but I gotta LMAO on that one! Well, the first step is facing your fears, which you have by trying out my ROM
You're on the path to getting rid of your Shark-phobia!
Now to your question, uumm... seeing as how it's Windows Mobile and with WM all things are possible, I'm sure that there is. I only know how to cook one in, but I've never tried changing a boot screen after the fact. I will look around for you and let you know if I find anything. It probably won't be today. Gotta work all day. Mabye some one else here can link you up sooner.
Edit: Now that I think about it, you may just be able to replace that file. It is called "
welcomehead.192 ". I've never tried it so I'm not sure it would work, but you could give it a go. Obviously, it needs to be 480x800 and named
welcomehead.192 . It also needs to be in .jpg format. A .png will definitely not work. I'm curious to know if that works. Let me know, if you try it.
I'm glad you're liking it so far!