You need to edit a text file called menu.lst which resides on the root directory
/boot/grub. You will need to do this as root (admin privileges) to do this open
a terminal ( Applications| System Tools| Konsole) and type: sudo gedit
/boot/grub/menu.lst. You will need to enter your password.

A text editor will open the file. To get Windows to boot by default you need to
edit the line that says: default 0 to something else because zero is the number
of Ubuntu. If Windows is second in your list then change it to default 1. (Grub
uses ordinal numbers, not cardinal numbers, so it counts from zero.) To change
the timeout edit the line timeout 10 to whatever you want in seconds. Timeout 30
will wait 30 seconds. Save the file and when you reboot you should see the
result of your changes.

Windows is not as smart as Linux. It is intentional on the part of M$ to ignore
other file systems. You need to install a free utility in Windows such as extifs
at: uranus.it.swin.edu.au/~jn/linux/ext2ifs.htm.