Desktop, new (gift) in 2009, opened last April(2013). Vista(!) 'was' working. Next set a partition in a unallocated space and put a copy of Ubuntu 12.04 in (not a Live one) . But now Vista is missing somewhere!
Ubuntu works great, but can't find the "dual-boot" part? Got a Ubuntu Forums archive tutorial(t-371530) to update the Grub file, but my 'menu.lst' is gone.

What to do Now ?