Upload a theme fails when the temporary directory isn't configured

Dear Mrs mishra,

Thank you for taking the trouble of looking into this problem. But my room to do things at my provider are limited. Ik kan not make directories in /home. I can only make directories in the drupal install directory. So I cann't say a /directory. Could this be a problem ?.

Thank you,
Timo

Update:

- Made a complete new installation of drupal 7
- Filled in the directories 'File System'
- Directories are created by Drupal . I could see this with the ftp program
- Still I cann't upload any file
I only have the possibilty to create files in my domain. So I cannot make a /home/somethink like that .

Meanwhile we have it so far that we can create directories inside the home directory. But still no show. Now I did do some hacking...
When I change the lines in file.inc from ( from line 1486 )
$file->uri = $file->destination;
if (!move_uploaded_file($_FILES['files']['tmp_name'][$source], $file->uri)){
form_set_error($source, t('File upload error. Could not move uploaded file.'));
watchdog('file', 'Upload error. Could not move uploaded file %file to destination %destination.', array('%file' => $file->filename, '%destination' => $file->uri));
return FALSE;
}

to

$file->uri = $file->destination;
if (!copy($_FILES['files']['tmp_name'][$source], $file->uri))
{
form_set_error($source, t('File upload error. Could not move uploaded file.'));
watchdog('file', 'Upload error. Could not move uploaded file %file to destination %destination.', array('%file' => $file->filename, '%destination' => $file->uri));
return FALSE;
}

I can upload a file with a page. But the install process now fails somewhere else.
permission-related probably yes but where ?.