Windows 7 clean install, transfer norton?

I am in the process of doing a clean install of windows 7 on my vista laptop containing my norton subscription.

It is a complete clean install on a new drive not an upgrade.

Will my current subscription simply reinstall on my new operating system as it did before with the same remaining time?

I have a 1 user 3 pc subscription but the other 2 are used on other laptops.

Basically will the subscription realise it is the same pc and continue as normal?