This is not a Western Digital Site....
This is where you'll find the details..... http://support.wdc.com/warranty/index.asp
Remove your email from the post and the phone number or you'll end up with a load of a lot of stuff in the mailbox and most probably get a lot of crank calls...lol
And also before you try to look them up, use your serial number and product number ( Sticker on the top of the HDD) to check if it is still under the warranty period. Otherwise, in HDD problem will become no HDD problem.