install themes in ubuntu 6.06

how do u install new themes in ubuntu dapper. i dragged the tar.gz file in the theme preferences but it showed me invalid format. how do u install?
i had downloaded the theme from
www.gnome-look.org

try reading the install & readme in the tar file.

thanks for the link though i'll try and tell ya if i can do it.

there is a .themes folder in ur /home/username,try installing there or /usr/share/themes
if below lnk helps ?
*monkeyblog.org/ubuntu/installing/
*art.gnome.org/faq.php

OK, Here is the full procedure for Installing a Theme in Ubuntu.

Method - I

For eg., Here I give the procedure to install the MacOS-X Aqua Theme
Download it from here

You need to download 3 files.
1) 13548-Gnome_MacOS-X_Aqua_Theme_20040730.tar.gz
2) Gnome_MacOS-X_Icon_Theme_20040730.tar.gz
3) MacOS-X_Aqua_Wallpapers.tar.gz

After you have finished downloading all 3 files. Let's install them!!
Open the Terminal Window & type:
$ gnome-theme-manager

This will open the GNOME Theme Manager.
Now, click on the 'Install Theme' button on the top-right, In the 'Theme Installation'
dialog , click on 'Browse' button & choose the file '13548-Gnome_MacOS-X_Aqua_Theme_20040730.tar.gz' .
Click on 'Install' button.Now the Mac Theme will be installed. Now select 'MacOS-X' Theme(Just scroll down a bit, you'll find it!!).
Now extract the 2nd file 'Gnome_MacOS-X_Icon_Theme_20040730.tar.gz'.
To extract it, right-click , 'Open with Archive Manager' Click on the 'Extract' button.
A 'Extract' dialog appears, again click on the 'Extract' button. Close the 'Archive Manager'.
Now you'll find a directory called 'MacOS-X' . You must move this directory to the
'/usr/share/icons' directory. To do that, type & execute the following command:
$ sudo mv MacOS-X /usr/share/icons

NOTE: You must be in the same directory were the 'MacOS-X' folder is stored. Use
'cd' command to move to that directory.
The final part, extract the 'Wallpapers' in the file 'MacOS-X_Aqua_Wallpapers.tar.gz'
And set the Wallpaper. That's all.This is how you install a new Theme in Ubuntu.

Ubuntu using Mac O.S Theme!!

*img210.imageshack.us/img210/3221/macthemewf6.th.png

Method II

$ sudo apt-get install gnome-art

You can choose the Theme, preview it & install it if you like!!
It's very much easier!!!!!

thx jguru, gettin the job done with the first method

@Chester, You can try the 2nd Method also. By installing the gnome-art package,
you will be downloading all the preview of Themes available for GNOME.
Preview the Theme, by selecting it. Click on 'Install Theme' to install the desired
Theme!!! Oh, It's so easy!!!