directory to the cache:
@lisp
-(with-eval-after-load "filecache"
- (file-cache-add-directory
- "@trampfn{ssh,news@@news.my.domain,/opt/news/etc/}"))
+@c `with-eval-after-load' has been introduced with Emacs 24.4. Shall
+@c be used when appropriate.
+(eval-after-load "filecache"
+ '(file-cache-add-directory
+ "@trampfn{ssh,news@@news.my.domain,/opt/news/etc/}"))
@end lisp
Then use directory completion in the minibuffer with @kbd{C-x C-f