Restore licence how

Hi,

 

I have 3 XP PCs all with NIS on them. I see a recent update has caused them to crash a lot, which has happened to me over the past week, so thanks for that. The mess it created was such that on 3 out of 3 I've now had to restore disk images to get the PCs stable again.

 

On 1 of the PC's, however, the image I restored was dated BEFORE I had renewed the licence key so now it thinks NIS has expired and renew now etc.

 

As I have a 3 user licence and all 3 are used, one of them being this PC that now thinks its expired, is it safe to just rattle in the licence again on this PC or will it think I'm now trying to register a 4th PC on the 3 user licence?

 

Or what to do?

 

Many thanks,

Rowantree