I Have No Serial number

hello, i am a newbi with macs, and i was trying to install my apple care when it asked for my serial number. i read the little form, and i went to my apples info. the serial number read blank. i started to get worried, so i went to trouble shooting. they said to double click the version thingy on the first part of "about this mac." i did, nothing showed up. please help me if you can.

ds store: You mentioned outgoing packets when you start iPhoto. I just watched it, and it makes a TCP connection to configuration.apple.com. That's probably the automatic check for a new iPhoto version, which I had enabled.
Yea it does that and something else, if you have BigTop installed from the Developers Tools and set to watch the outgoing packet sizes, everytime you launch iPhoto there's all these outgoing packets...
I found out what it was, it's calling the mDNSResponder process which
The multicast DNS (a component of Bonjour/Rendezvous) responder; this advertises network services (such as AFP file sharing) provided by this computer, as well as the computer's self-chosen ".local" name.
Note: this runs under the pseudo-user "nobody" (presumably for security reasons).
(so thats who nobody is. )
http://www.westwind.com/reference/OS-X/background-processes.html
Oh great, just broadcasts my computer name (which often has your real name when you set up Mac OS X) out in the clear whenever I take a look at iPhoto, wonderful.
So since I don't use Bonjour/Rendezvous, I told Little Snitch to block any connection using this process.
I've deleted all my Little Snitch rules, including the default ones, and now carefully only allow certain processes or applications access and then for only as long as I'm using them.
I'm experimenting with LS to see if it gives 100% complete network blockage, I had it run all night last night and found one packet leaves the machine every 4 hours or so, apparantly it's the lookupd process, which will be denied tonight.
The way I'm going, if I catch anything it can't get out or phone home unless it breaks root.
There are some other juicy things I'm finding out. Address book, the Dock, iDVD making outgoing network connections. you can read this thread
http://discussions.apple.com/message.jspa?messageID=2265203#2265203

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