I finally got my lazy butt up and made this new version of ImageTrans.
The download link is on my site,
http://www.freewebs.com/neodragon64
For those who don't know what ImageTrans is, it is a program like the program VanTrans, which takes two images and makes a transitional image for a smooth-looking transition to another texture based on the mask image. The textures and masks can now be any size, but all equal sizes. Now incudes a help file that explains how to use the program.
In the images, the first image and second image are the images you are combining, and the third image is the mask image.