I appreciate the help, JCEMT.
Here's the letter w/o the personal info:
(**FYI below, rc'd new letter today)
TO WHOM IT MAY CONCERN:
I received a “Summons†in the mail (envelope postmarked 04/30/0

, dated 03/30/08. I promptly called and left a message for a representative to contact me with more information regarding this alleged debt. However, I have yet to receive a response from your agency.
The purpose of this letter is to prevent a “Default†judgment ruling by the court.
Within 30 days, please send (in writing) the following items to my attention:
1) proof of debt, as required by law
2) any proposed settlement offer(s), to be considered upon review of debt validity.
The documentation should all be mailed to my address above.
Please do not hesitate to contact me (in writing) with any questions.
Thank you for working with me to resolve this matter without further use of the court’s time.
SINCERELY,
XXXXXXXX
CC: XXXXX CITY CIVIL COURT
**(FYI I got confirmation from USPS of delivery on 5/19 and I got a letter today in the mail dated 5/19 that basically is another copy of the same judgment paper, along w/ a cover sheet basically only saying that they are the attorneys for the above collection agency, but it didn't really look like it was in response to my letter...They also said I have to call them immediately and they said they rec'd affidavit confirmation my summons was delivered to me, while also threatening a default judgment.)
Thanks again for any guidance!