I deleted disk partitions - installing Ubuntu 11.04 to WIN7 build - I need windows back but how?

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http://askubuntu.com – Steps to disaster Installed Ubuntu 11.04 Partitioned drive upon install and gave Ubuntu entire disk. Several months later I need WIN7 as dual boot What happens at present Booting into WIN7 via F9 option at boot .. takes me to Ubuntu. It describes 'preparing to boot from Windows' but screen goes purple and it comes up with Ubuntu instead. Booting normally : machine either makes a horrible beeping (continious) and blank screen or boots in Ubuntu or a mix of beeping initially then fires up Ubuntu. (to be honest best to F9 to get into Ubuntu .. seems (HowTos)