Thank you very much.
It's OK ! I installed Opensuse like Ubuntu, added a Boot manager's entry in Seven and configured the two "menu.lst" (Ubuntu + Opensuse) to jump from any Boot Loader to others Boot Loader. It's work perfectly !!!! So happy !
Just some problems about my extend...
I come here to explain that I tried very very very many hours....days to make a dual-boot system with Windows Seven and Ubuntu 8.10 and i did it !!!! (=>1 day 1/2 total !!)
To summarize the end of my method :::
- Installation of Windows Seven
- Installation of Ubuntu with GRUB not...