Publishing problem

I completed site on the my local. Then I put it on server (database and application) . When I try to access the site through a domain I get a installation page starts with a message:

nopCommerce installation
The [myaccount] account is not granted with Modify permission on folder [C:\inetpub\vhosts\domain\httpdocs\. Although this is not an error, it's highly recommended that you configure these permissions.


The problem is that I already have database on server and do not want to create a new one or rewrite old.

Does anyone know where  nopCommerce receives information that installation already completed ... or there is a possibility that there is some other error? (For me at the local all good works. Database at me and I compared the server are the same. Application files have also compared by me on the server and also the same)


Thanks

Nopcommerce knows if it was already installed by looking in connectionstrings.config

Upload your connectionstrings.config from your machine to hosting server, just change the connection server,db,user,pass to the one in the hosting.

I found a problem. I put connection string in my host admin panel. Now it works correctly. (This is my first asp.net hosted application and I did not know that I must do that... Is this for all asp.net applications need? ) But I have one more problem: I can't save picture for products. Problem is in access rights: Access to the path 'C:\inetpub\vhosts\mysite.net\httpdocs\images\thumbs\0000084.jpeg' is denied.  Folder thumbs has read and write rights! How to sovlve this problem?

Thanks

make sure write permission is granted for both is_user and network service