win activation help me pls!!

From: chris (anonymous_at_discussions.microsoft.com)
Date: 03/31/04 

Date: Tue, 30 Mar 2004 18:34:04 -0800

i have put in a new processor and reinstalled win dows
now it thinks i am trying to run my copy of win on 2
computers so it wont leme activate how can i disable the
activation thing thers a reg key somewhere i heard