I want to upgrade windows 7 home premium to windows 7 enterprize without loosing my pre installed softwares?

I am having sony vaio cw series having pre installed windows 7 home premium and my college provide me a windows7 enterprize edition and i want to install that and i am having pre installed softwares that provided by the sony corporation like vaio media plus ,media gallery,vaio control center, vaio power management etc, i want these softwares on windows 7 enterprize edition if i install . plz help me i did nt want to loose these softwares, sony did not provide any software cd to recover these softwares and no download option is available on on sony website plz help