If it gave you trouble when you clicked to activate, then you're gonna have trouble when it does it on it's own.
Go back to the System Infomation screen (my computer -> properties, or windows+break) and click the activate now link at the bottom. Then click change product key. Type in your key, and click activate. If it still gives you trouble, you'll need to click the activate by phone option, and give them a call.
Originally Posted by Danbeme32
You need to call the 800 number to reactivate Vista..After 3 days some of the functions will stop working till you activate it..
No, that's when the 30 day time runs out. The timer he's talking about is just the automatic activation for when you're connected to the internet. It's an option you can click when you're installing Vista. It's a different countdown than you're thinking of.