Hi,
I've a lot of desktop themes on my computer (Windows 2000), most of
them are packed in a .zip file - is there any installer software (with
preview function) managing these files directly - without unpacking it
first?
I want to 'browse' the themes before uncompressing it any if possible
install them direct from the .zip file.

Hi krro: 

I was able to find the following programs that perform what you are
looking for:

Desktop Architect v2.11
URL: http://www.themedoctor.com/da.shtml
Cost: $0

DesktopMaster
URL: http://www.desktopmaster.net/en/en_download.html
Cost: $19.95


I hope this information helps with your research.                  
                  
If you need any clarification of the information I have provided,
please ask using the clarification feature and provide me with
additional details as to what you are looking for. As well, please
allow me to provide you with clarification(s) *before* you rate this
answer.
                  
Thank you.                   
                  
websearcher-ga                   
                  
                  
Search Strategy (on Google):                   

desktop theme installer preview

http://www.desktopmaster.net/ is exactly what I'm looking for!
Thank you for you very fast answer:-)