How do I install themes on my Sony Ericsson G700?

I just bought a Sony Ericsson G700 and I always tried to install new themes (UTZ files.) With the PC Suite or rather the setup application, he said – Installation failed. So What should I do? Http: / / sefanboy.com/2008/08/12/g700-g900-theme-selections / QUESTIONS # more-830

G700 i hav I can also copy my songs onto a Memory Stick No other wen folder or delete the usb go another option to install … wrk is trust me