1st you need to know the tracking number of that registered
article..
http://www.usps.com/shipping/trackandconfirm.htm?from=home&page=0035trackandconfirm
you should be able to track it & the above link just serves
as an example if your registered article comes from US..
Mine is from HKG, but the status goes all the way till it leaves
the country. In HKGpost, you can check the status of a mail from
Singapore with its destination at HKG(of course), but singpost
doesnt offer this feature. Sad.