problem to enter into boot from cd option..

[macb]

:KS hi friends i recently install ubuntu 9.10 parallely with windows xp and i have install the GRUB into ubuntu. while working with windows some virus come on my system so i restart the system with ubuntu and delete those files. By mistaken i have deleted RUN DLL32 or some of these kind file due to which windows not runing properly.Now i want to repair the window from my window xp cd. But i can not able enter into boot from cd.. option while staring the system because after boot from cd option , within mili second GRUB loading.. come.
So will you please tell me that how can i enter into boot from cd option or any other way to repair window xp.

[zvacet]

You have to change first boot device in BIOS and set CD as first boot device.Other way is to press some key (F12 for me) to change first boot device just for one time.