RE NAV 2009 key

I downloaded a trial of NAV 2009 from web.

Liked it.

Bought a physical disk in a shop.

Question is :-

Will the key on the one I bought do to activate the one I downloaded. It is a genuine product and I just want to avoid the uninstallation , running removal tool etc. The one installed is working OK andI would lik e to carry on with it.

 

Thanks