unlock sony ericsson s710a

I am a cingular customer, using a sony ericsson s710a phone.

I need to unlock it, but cingular demands the social security number on that account... which I don't have since I am an "add on" phone on the account.  The account holder is out of the country right now, so I have no access to this info....

I am leaving on vacation in two days, I need to unlock my phone before I go.  Is there a way to do this without speaking to cingular customer service? perhaps there someone has a code that will work?
bscnyAsked:
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SarahWHCommented:
Hi :)

A number of companies offer this service (e.g. http://www.thetravelinsider.info/roadwarriorcontent/sonyericssonunlocking.htm or http://www.unlockitnow.com/remote/unlock/by_cable/Sony_Ericsson/unlock/S710a_unlock.php (this company states you dont need to send your phone off and can do yourself with a cable).  You would probably be able to find one local to you on google......  Unfortunately there is no such thing as one code that will work for all phones.

Sorry if the above doesnt seem that useful.
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dr_shivanCommented:
Yo,
The link below has listed a method to get the phone unlocked but have to wait for a couple of days.
Hope it helps.

Refer to last post from Ticker
http://www.cellphonehacks.com/viewtopic.php?t=40316
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bscnyAuthor Commented:
Thanks for your suggestions.  I am already back from my vacation and don't need to do this anymore.
I was surpised to see all my incoming calls and incoming text messages come through while I was in Italy.  My phone automatically connected to some network there called WIND.  I actually decided not to make calls from there, since I did not know what kind of crazy charges my calls would incur, but in case of emergency I would have been able to use my phone without unlocking it.
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