I lost my login pass and i do not have the cd to reset it, what should i do?

You can call Apple Customer Support, http://www.apple.com/contact with the serial number of the computer and ask for a copy of the original install disk...they can send that for a fee, around $16 (US).

If it is brand new, then it must have come with Lion, Mac OS X 10.7, as the operating system. In that case, startup in recovery mode by restarting and holding the Command and R keys. That is the same as using an install disk. After selecing the language, click Utilities on the menu bar, and Reset Password. You then will be able to select the user account and set a new password.

You're welcome and hope it came with Lion so this works.

You apparently don't understand that OS X since last year Lion 10.7 does not come with DVDs.

You use Lion Recovery Mode (and now Mountain Lion)

http://support.apple.com/kb/HT4718

How to install Lion or Mountain Lion on multiple computers

Google is your friend: "How to reset password mac os x"

Apple's How to

http://support.apple.com/kb/HT1274

Resetting a user's password in OS X Lion and Mountain Lion

Important: Passwords for administrator accounts should not be blank.

1. Log in with an administrator account. Tip: If you don't know the password of any administrator accounts, see "Resetting the original administrator account password" below.
2. From the Apple menu choose System Preferences.
3. From the View menu choose Users & Groups.
4. Click the lock button if it appears locked; enter the administrator password.
5. Select the name of the user whose password you want to change.
6. Click the Reset Password button or the Change Password button.
7. Enter a new password in both the New Password and Verify fields, and add a Password Hint if desired.
8. Click the Reset Password button or the Change Password button.

Resetting the original administrator account password

In OS X Lion or later, you can reset your user password with your Apple ID.