Installing Ubuntu along with windows 7 on shrunk partition

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http://askubuntu.com – I am new to Ubuntu OS and ask Ubuntu community.First this is not a duplicate question.Actually this a question which is a summery of all solutions& questions were posted in this community ,related to Install Ubuntu along with windows 7. I have bought a new Hp laptop with its original windows 7.I want to install Ubuntu along with windows 7 64 bit.I ran the Ubuntu 12.4 Desktop installation CD.But Ubuntu installer doesn't show the "along with windows 7 option"only it is showing two options.I read some questions and answers posted on this community.Specially following link Ubuntu 12.04 does (HowTos)