What do you mean the url is not correct?
- Download zen cart.
- unzip it.
- rename the folder to something more friendly, such as "store" or zencart 1.3.9c or whatever your current zen cart package is.
Now, do you want your store installed directly in your home directory, ie, YourDomain.com or do you want it in a subdirectory, YourDomain.com/store? If you want it directly in your home director (yourDomain.com), load your ftp program; in your local window, navigate to zencart folder and open it up; then navigate to your home directory (root) on your server; select all the files from zen cart (local drive) folder and click upload.
If you want to dump everything in a subdirectory yourDomain.com/store, then create "store" folder off of root (public_html) and navigate to /store and upload directly into store; alternatively, you can name your zencart folder that you unzipped, name that store, then upload "store" to public_html.
Hope this makes sense. I've found the Zen Cart "install" instructs in the docs folder to be straight forward. Try to follow the directions step by step.
The Greatest Ever -- ZhENerationX