How can I get a copy of my 1040 application when I filed my taxes either in 2005 or 2006? I need one of my daughters ssn.

Check with the accountant that did the taxes, where is your copy of it ?
How old is daughter, and why don't you know her SS number. Where is her card ?

You can obtain a free transcript of a previous tax filing, which should contain what you're looking for - see this post:

https://www.askmehelpdesk.com/taxes/...rs-318020.html

Call 1-800-829-1040 and ask for the free transcript for the years in question.