Filling a Form I-230, II

Hi. Need help on filling a form I-230, II!

My process (I-130 for father) was approved by the USCIS in 01/29/2009. It´s a consular processing case and i´m the beneficiary, living in Brazil.
I have two questions on some questionings in form DS-230, II:

1) In 1984 I went to court for a minor offense (carrying one marijuana cigarette). I pleated guilt and paid a US$50 fine. Should i inform this fact on question 31 of the form DS-230, II, (once this fact happened 25 years ago)?

"31. Have you ever been charged, arrested or convicted of any offense or crime? (if answer is yes, please explain)"

2) In 1988 I received my social security number. It occurs that I do not have it, anymore and i dont remenber the number.
I dont know what to inform about it on the form DS-230, II.

"33. Have you ever applied for a Social Security Number (SSN)?
Yes___ Give the number____________ No___"

tx.

You may be able to find out your social security number through the Social Security Administration, or through credit reporting agencies like Equifax.