i accidentally deleted one of my accounts i used for DLC i know the gamertag but nothing else ...

If you do not know the email address for the account but do know the Gamer tag you can call xbox support at 1800 4 my xbox or chat support at support.xbox.com/contact-us and if they can verify you ownership of the account they can tell you what your email
address is that is associated with the account.

if you don't know the gamer tag but have a credit/debit card on the account they can search for your account with one of those numbers and again if they can verify your ownership of the account they can tell you the email address for the account

Basically they are saying that they want to recover a gamertag that the accidentally deleted and how do they go about getting it back.

Bing Translation:

Hello

long accidentally I deleted my xbox account, and a month ago I could return to create it using the same email above.

The problem is that I try to change my gamertag for the first time and get me that the gamertag is busy, seeing the data of the user of this gamertag I realize account that refers to my previous account.

is there any way to recover the gamertag, still has the previous not her I open because it used the same email that I use now?

You can't delete gamertags unfortunately, the only thing you can do is change the e-mail on the gamertag. Please follow the instructions here, if it instructs you that you have to wait 30 days to change the gamertag then you need to wait 30 days. The instructions
can be found here:
support.xbox.com/.../manage-live-id.aspx

i know when i got another 360 i did not do the license transfer thing right away. so any dlc i purchased on my gamertag,my son's gamertag could not access on our 360, and i could not use any dlc i purchased on his gamertag.

what i did to rectify this was delete the DLC, and redownload it and now we can use each others purchased DLC

Please be aware that it is also possible that you accidentally created this account on your email address. More people than you think do this accidentally without realizing that they have done it.

This is the most likely reason if nothing else relating to your email address has been accessed. Remember, to create a gamertag they would need to know both the email and password.