Help with texture editing on PSX

[The Kreator]

What I've done so far is: Extracted 13 .TIM files from a .BIN file (which only contains the .TIMs)... I edited the TIM files in Photoshop... now how do I pack all the .TIMs back into a .BIN to replace the original?

Once they are replaced, is it possible to burn a PSX cd without using a CD-to-CD copy? The entire CD is copied to my harddrive (all directories/files, etc... not a CD-Image).

I hope that's not too confusing!

Thanks!
-The Kreator