boot loader problem

[Mattia Milleri]

I have a problem with the bootloader, at the end of FC4 install you are 
asked which of partitions of the disk you want to be bootable, and you 
have to choose those that you want and give a name to them.
I have one partition with WinXP and another one with FC4, so I wanted 
the possibilty to choose during system start which OS I wanted to boot, 
but the boot loader boots only FC4 even if I wanted the possibility to 
boot WinXP also.
I can rewrite the boot-loader to boot WinXP but then it's impossible to 
boot FC4.
Maybe I did something wrong during installation process? In which way I 
should choose the partitions that will be bootable? Maybe I had to 
de-select the default flag on FC4 for booting.
Thanks for help!