HELP problem with tar

[Admin]

paths instead of relative paths using tar. i.e. I save a directory
/u/harris/trash. How can I restore this directory and subtrees to let
us say, /u4/harris/tmp/trash.
Thanks. If possible, please respond by email.
---Jonathan
Jonathan G. Harris                   Bitnet addresses: jghha8r at uchimvs1 
The James Franck Institute                            harris%go-han at uchicago
The University of Chicago             arpanet:     harris at go-han.uchicago.edu
Chicago, Illinois 60637               alternate: 10506 at ncsavmsa.bitnet 
Jonathan G. Harris                   Bitnet addresses: jghha8r at uchimvs1 
The James Franck Institute                            harris%go-han at uchicago
The University of Chicago             arpanet:     harris at go-han.uchicago.edu
Chicago, Illinois 60637               alternate: 10506 at ncsavmsa.bitnet