"The Tailor" can be bought at DAZ3d.com.

Dr. Geep's tutorials on magnets are the best I've ever seen, but I don't know where they are now.

Another possibility would be to use dynamic clothing, since you have Poser 5. It's a lot easier to fit dynamic clothing to morphed or even different characters. For example, with dynamic clothes, Posette can wear Vicky's shirts pretty easily.