UE1 - UT How to animate a texture?

I'm not sure if this is the best section to post this as this is more of a graphics question, but I have a great water texture that is perfect for what I need in every way, except it is not an animated texture. I know I can make it special lit and light it with the "ShimmeryWater" effect, but it doesn't do quite what I want it to and I can't be sure everyone plays with dynamic lighting turned on anyway.

Are there any tried and true methods for taking a single water texture and animating it? Any programs out there that can do it for you and generate all the frames I would need?

Thanks in advance

How do you use WetTexture? I never even knew such a thing existed... I can't seem to find it though, it's neither in surface properties nor texture properties (although I did find a thing called bWaterWavy which doesn't seem to do anything)

Well I found it, but when I go into the texture properties and try to change the object class, it won't let me highlight to change it

Edit: Okay now I figured out I have to go file > new and create a new one but that only lets me select up to 256 x 256 and my texture is 1024 x 1024 and there's no way i'm reducing the size by a factor of 4 but there has to be a way to change the wettexture dimensions somewhere else right?

Well, thanks for your help, but the size limit simply won't do... however I have spent all morning painstakingly creating all the frames necessary for an animated image; I found some various filters in my image editing program that apply ripples and whatnot to an image and I changed the intensity and orientation little by little for each frame and and ended up with 32 frames in the sequence. It looks awesome in game and the frame rate is still consistently above 60 but unfortunately I now have a 50 MB map, although hard drive space is hardly an issue these days so there is really no compelling reason why a large file size should be a big deal right?