Win 7 upgrade and OEM unused: expect UPDATE issues once installed?

[Dehick]

I have a copy of each meant for new pc's i built while Vista was still the latest version, only now do I plan to install the OS (for one I bought Vista OEM, then 7 upgrade to apply, haven't installed either) on these machines.
-for the fresh 7 OEM install, I'll assume many, many updates will be installed, yet all will run smooth, hmm?
-for the other box, Vista OEM goes in first, then the 7 upgrade: Should I prevent any Vista updates from installing before I proceed w/ the 7 upgrade? Thanks, Dehick.

 

[NoelDP]

Windows 7 Upgrades require at least Vista SP1 as the base license - or you can use the double-install method to clean-install the Win7.
http://www.sevenforums.com/tutorials/31402-clean-install-upgrade-windows-7-version.html