i formatted my computer, when i was reinstalling windows XP. the code key that i have is not working. my accounting package can be run only by using a registered windows XP.How do i find the code.1 person needs an answerI do too

Try to do Activation by phone, contact Microsoft for help with it. When you try to activate your license you have one option which is online activation and another which is by phone. Disconnect from internet and try activation by phone.

Try the below link for activation instructions.http://support.microsoft.com/kb/950929

Try the below link for activation instructions.http://support.microsoft.com/kb/950929