Vicky4713, It is impossible to change one website address into another in uCoz web-services ( site1.ucoz.com into site2.ucoz.com). Although, it is possible that your website will be available under your own second-level domain name like mysite.com or mysite.su etc. You will have to purchase a domain name for this purpose, if you don't have one at present. Then you will have to attach it to your uCoz account in Control panel->Domain transfer. See the domain attachment tutorial here http://forum.ucoz.com/forum/37-435-1 and continue in this thread. All the data and the website outlook will remain unchanged. You may purchase domain name here https://domain.ucoz.com/
Use search next time and post your messages in the correct thread.
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