There are some samples about UISTYLER at www.caxinfo.com website, but you need to being familiar with the chinese.
You can find out a example(ufsample.c?) about how to operate UG/Styler in the directory UGOPEN.
Don't worry! You can get help from the UGDOC/opendoc. And in the directory:UGOPEN , there are many samples you want.
Above all, you must have the unigraphics software.