how to triger tramp?

[Kai]

hi all,

I used to use Tramp to access remote file in Emacs, but when it comes to  
XEmacs I can't start tramp...

Acroding to the XEmacs tramp info page, use /[user at host]/path/to.file  
should fireup a tramp process. I tried, but it always open a local file....

How can I start tramp? What should I do now?