It's nice to be trusted... If you have any fear of the addy I gave, do this instead :

Go to www.ups.com
Select your location (USA-English is what I use)
In the top right type 'theupsstore tracking' and click the search button
In the results list select the second result titled 'The UPS Store : Track Shipped Packages'
This brings you to the same link I provided, just via the UPS site.

You get your tracking history, expected delivery date, etc.
You can also tell it to e-mail you a short message when the item is delivered, just in case the delivery driver decides to have your N900, or delivers to an incorrect address.