Hi, how i can change the dir of my webdite in ispconfig3? Now i have some website on one linux server with plesk, and the path of my document folder is: "var/www/vhosts/mywebsite.com/httpdocs" how i can set the same document path in ispconfig3 as default for all new website? Thanks.
Then you have a good chance that your setup will not work. The path is there so that you can change e.g. /var/www to /home/www in case that you compiled apache manually with a different document root directory. But you can not change the structure of the path.
If I uninstall ISPConfig and use virtualmin to configure domains, I must first delete something to make it work?
Thats depends on virtualmin and not ISPConfig. You might have to ask the virtualmin developers if they support the setup that ISPConfig uses.