The pre-beta version has the same licencing system like vista, only different keys, so I think that you'll only need new accurate key. Only difference in this system between 7 and vista is, that in 7, software licencing service and folders are renamed to software protection, there are also tokens.dat file, which you can use to backup your activation, because RC keys can be used only 10 times, correct me if I am wrong...
i can upload Fellows i upload the beta release of windows seven to rapidshare.I dont now maybe sharing rapid links is forbidden in here.But if it's not i can put the links on here.Please give me a direction