[TYPO3-v4] a question on typo3 - 4.5

[Shawn Wang]

Dear Sir or Madam, 
Is typo3 version 4.5 designed for upgrading from previous version only, or it can be used independently? 
I installed 4.5.2, but I can NOT create admin user, because no be_user table, so that I can NOT login to the system. 
If it is designed for upgrading only, would you please tell you, which version I should start with? 
Many thanks, 
Shawn Wang