Can I tell when my Hotmail account was created?

Here's what I did to get mine:

After signing in to the full version of Windows Live Hotmail, click on the Options link in the upper right of the window:

That presents a drop-down list, at the bottom of which is the More options... link. Click on that and you'll be taken to a page that includes, in part this:

Click on View and Edit Personal Information and you'll reach your destination:

Here you can see I've had my account since 1999, not long after Microsoft acquired Hotmail. (I blur my Hotmail address because it's most definitely not the way to contact me.)

You should be able to follow these steps and get similar information about your own account.

One caveat: since your account may be used for multiple services such as Hotmail, MSN Instant Messenger the date would be the date you created the account, regardless of which service you first used to create it. Thus, if you create the account to use MSN Instant Messenger, and then a year later start using Hotmail with the same address, the date shown would be the earlier of the two.