Originally Posted by raj00raj
can i install windows using grub??
Installing Windows after any Linux distro will result in the Linux bootloader being overwritten by he Windows bootloader. The Windows bootloader does not recognize any Linux distro.
If you want a dual boot configuration, it best to install Windows before any Linux distro.
A quick check on DistroWatch.com show that both AsteriskNow and Trixbox uses GRUB legacy (0.97). I'm only familiar with GRUB2 as I've never had the cause to use GRUB legacy.
There are numerous resources on the internet that may help you configure GRUB legacy.
Here's a link to it's manual: