Simple upload script

[zzz]

I need a basic functionality to allow users upload documents. I found this script which seem to be correct but i just can't seem to get it to work... Can anyone see what am i doing wrong. Also, do i need to CHMOD uploads directory to 777?

echo "<form enctype='multipart/form-data' action=".$_SERVER["PHP_SELF"]." method=post>
	<input type=hidden name=MAX_FILE_SIZE value=2048000>
	<input name=userfile type='file' /><br />
	<input type='submit' value='Upload' />
	</form>";

if (@is_uploaded_file($_FILES["userfile"]["tmp_name"])) {
copy($_FILES["userfile"]["tmp_name"], "/uploads/" . $_FILES["userfile"]["name"]);
echo "Resume uploaded successfully.";
}