reinstall keep updates and softwares

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http://askubuntu.com – I already have Ubuntu 11.10 which I installed it using 'wubi'. Now I noticed that this kind of installation have some limitation like I can't hibernate and etc. Now I want to reinstall my Ubuntu from boot so I can have swap drive. But I already installed a lot of softwares from software center and also updated my Ubuntu. Is there any way I could install this softwares offline? I don't wanna download them again with my low speed internet :-( (HowTos)