I have a problem ... when I try to open my home page I see error:

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster@vndv.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

How cam correct this error

Try deleting the .htaccess file. Which might not appear in your FTP client so use the web based version to delete it. Which works for me.

Thank you ..... but what can I do if I need it

Try Entering the right details in the .htaccess go to zymic's irc if ya need help.

My .htaccess
ErrorDocument 404/404.html
ErrorDocument 403/403.html

What is wrong???

Search everywhere on your account for any other .htaccess files.

and yes thats correct.