How do I create TEX0 files?

[Your Face]

Hey! I used cBliss to make another color slot for Jigglypuff (there's 8 now) so I can use a cool costume, but Brawl Costume Manager won't let me import any images to use as CSP/Stock Icons/etc. I was able to import the BP(?) and the RSP(?) by putting InfFace368.brres and MenSelchrFaceB360.brres in the right folders by means of a pretty complicated method*, but I can't import the stock icon or the CSP, since they're located within StockFaceTex.brres and sc_selcharacter.pac (right?), but even if I open both of those files within BrawlBox, I need to create TEX0 files, since that's the format all the other Stock icons and CSP's are in. Soooo, how do I create TEX0's?

*I replaced the images in another build, then found them within their folders (in .brres form), so I copy/pasted them into my build.

tl;dr: Title.