Dual Booting Problem

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http://forums.fedoraforum.org – My operating system is Fedora 9 but in order to use some application (my college teachers still insist us to learn Visual Basic!!!) i need windows, i use windows xp, few days ago i installed daemon tools in my xp, previously i used alcohol and that dint give me a problem, but due to some reason daemon tools was the only available software at that time with me, and after installing that thing my windiows kept rebooting constantly, booting fedora is not a problem but i cant boot windows now, I want to install windows, but my xp cd is not being recognized, i can format the whole computer but i dont want to, is there any process that even if i manage to format the windows partition using vista cd or some other linux cd and after installing windows i can still access my fedora, i mean the grub will be formatted, so i need to reinstall grub?? if yes then how? please explain in details and why after installing daemon tools the problem occured? with single xp as an os i never faced the problem, i will never use daemon tools again but just academic query thank you in advance (HowTos)