I have missed placed my 2006 tax returns. Is there any site I can go to, to fide out what I received?

No - there's no single site where you can get your old returns. If you used a professional tax preparer they would have a copy in their records. You can order a transcript of your records from the IRS - it's free and it takes about 2 weeks. Or you can order a copy of your return, but that costs $39 and takes 2 months. See:
Tax Topics - Topic 156 Copy of Your Tax Return – How to Get One