64-bit mode on MacBook Pro?

How do you know that your Mac is running in 64-bit mode. I run my Windows 7 partition in 64bit mode, but I don't know if my Mac is doing the same.
Thank You.
Specs below (in green text)

Taking a quick look (no pun intended) in Activity Monitor I see that almost everything is running in 64bit mode (except for ituneshelper and itunes), but safari runs in 64bit as well.
Anyways, let's see what Steve Jobs has instore for Mac OS X ("Lion") tomorrow at the "Back To The Mac" event. Hopefully, OSX Lion will run well on the current 2010 MacBook Pro's without any kind of upgrading (Hardware-wise, like ram upgrade). Personally, I don't understand why Apple feels the need to release a new OSX, I mean Snow Leopard came a little over a year ago and it is the best Version of OSX yet (I used Tiger, and Leopard, and I say 10.6 is a leap forward improvement over Leopard in terms of snappyness). OSX (Snow Leopard) is lightyears over Windows in terms of technologies, I mean, look at how OSX uses its kernel, it runs 64bit capable applications in a 32bit kernel and still the user enjoy the benefits of 64bit applications without the need to boot with the 64bit kernel, in Windows 7 you can't do that. What I would not like to see in 10.7 is someting like ditching the current aqua interface in favor of the minimalistic iOS UI, it will make OSX look like (in Jobs terms) as "Baby Software", I guess is me but Aqua fits OSX still to this date, even Windows Aero looks retro when you put it against Aqua.
Thank You everyone for your feedback.

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