How to put textures in .u file ?

[d.j.Chaos]

I change texture from .U file . How to put this changed textures back in .u file ?

[Fear the Beard]

textures in a .u file, that's something new for me, I've only seen texture files labelled .utx

can't help ya there I'm afraid...

[RizMan|PuF]

I thought *.u files where used for mutators or anything you do while editing UScript. Textures are stored in *.utx I think.
Can't help you with you problem sorry, so I consider this post as spam