Here is the Solutions for most WW issues

1- it's very Recommended that you format the C then install a FRESH windows , you'll never be asked for SN

but but:
in case of you wanna install wesmosis' windows from already installed windows, you'll be asked for the SN which is:
SN: T7C4Q-47VGM-R7J6B-VPJ84-JPJ93

2- here is the NERO reg key:
http://libyansoft.net/Download/sh@h@ton/Wesmosis.Nero7.REG..rar

3- To Guenize you WW in order to Update the windows, and run IE7 , BitDefender
download the followint tools:
http://www.bestsharing.com/files/ms001127930/Make%20Your%20WW%20Genuine.rar.html

4- the Password for the RARed WW is:
www.libyansoft.net