1) Yes, you can use the logo if you can prove certification
2) Stationery, business cards etc are fine. No logos on products themselves.
Call Brittany at AIAG Merchandising 1-888-746-3003. She will fax you an AIAG contract. You fill it out and return it with a copy of your certificate. She will then send you a floppy with the logo or will email it to you.