How to synchronise NFS uid

[HXC <hxc@planet.nl>]

There are folders in my NFS share that I would like to keep private. I 
gave the same permissions as my home folder (my username). Unfortunatly 
my username has the same UID as the computer computer thus my username 
becomes the username of the clients computer. How can I prevent this? In 
other words how do I synchronize the UID of the client and the host 
computer? Thanks in advance!