"Does anyone know if i can make my windows genuine by somehow entering this validation key"... Yep. Dl RockXP4.exe or XPPID.exe, push in your legit activation key and then go to Windows Update site - it will activate the key. Maybe. If the legit key is for a different type of OS [OEM, full retail, vol licensing..] then you must do a Repair Installation with the cd.
No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.