here is my code:
table.m
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @”Cell”;
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
NSDictionary *dict = [array objectAtIndex:indexPath.section];
NSArray *ns = [dict objectForKey:@"Services"];
NSString *text = [ns objectAtIndex:indexPath.row];
cell.textLabel.text = text;

NSUserDefaults *stringDefault = [NSUserDefaults standardUserDefaults];
NSString *defaultSetting = [stringDefault stringForKey:@"shortSetting"];

if (cell.textLabel.text == defaultSetting) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}

return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
NSUserDefaults *stringDefault = [NSUserDefaults standardUserDefaults];
[stringDefault setObject:cell.textLabel.text forKey:@"shortSetting"];
[stringDefault synchronize];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
if (indexPath.section == 0)
{
if (cell.accessoryType == UITableViewCellAccessoryNone)
{
[self dismissModalViewControllerAnimated:YES];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
}
}

and in my appdelegate:

- (void)applicationDidEnterBackground:(UIApplication *)application {
NSUserDefaults *stringDefault = [NSUserDefaults standardUserDefaults];
[stringDefault synchronize];
}
- (void)applicationWillTerminate:(UIApplication *)application {
NSUserDefaults *stringDefault = [NSUserDefaults standardUserDefaults];
[stringDefault synchronize];
}

would be great if you can help me!
greetz
itsfall