Your old accounts should still exist and the toons should all be there. Finding someone from Bioware/Mythic that can help you may be a slight pain though.
Long ago, as best as I can remember, when things shifted to EA they auto created an EA master account for me and the master account name and password were initially auto set up as my old DAoC account name and password.
With multiple accounts you should have multiple master accounts (if I remember correctly) and those master accounts should have the account name and password of your old account(s)
Try logging in to the master account by using one of your old DAoC account names and passwords.
gl
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The art of war is simple enough. Find out where your enemy is.
Get at him as soon as you can. Strike him as hard as you can,
and keep moving. - Ulysses S. Grant
Only the dead have seen the end of war - Plato