Collections account not on credit report question

I recently realized I had a few unpaid traffic tickets from 2005, that have since gone to collections here in WA state with Alliance One. At this point, they have not been posted on my credit report nor have I been contacted by them (they may have tried sending a letter to the previous out of state address the vehicle was under at the time the tickets were received, but I never received that) Now that my wife and I are getting ready to start shopping for a house, etc. I would like advice on how I can best contact this Collection Agency (which from what I have read is notoriously shady and hard to deal with) to make the payment in full without it being posted onto my credit report as a paid collections account in the future. One would suspect that if I contact them, with the information for all the tickets (this is not a debt that can be disputed at all, it is what it is) wanting to pay in full but NOT wanting it to ever show up in the future, since it hasn't to this point, is there a way to do that legally. I have read that Alliance One will not write or deal with Pay For Delete letters. But since this has not yet been reported, if I just get it paid can they then turn around a report me and totally wreck my near perfect credit score for the next 7 years? There is no applicable SOL on these parking tickets here in WA. I can't go for up to 20 years, after extension.

Should I call (not from my phone of course) and just ask them about this situation voluntarily (without giving name or details or anything) just to feel it out or should I approach this differently? I don't want to ignore it, I actually just want to pay it, but I never want to hear about it again.

Advice please??