I had CIN II around 13 years ago and had to go in for laser treatment and a biopsy.
I dont think my abnormal cells were there for very long (maybe a year).
When I found out I was really scared, but try not to panic too much.
I dont know if the procedure itself has changed since i had it done so long ago, but it was done as you said in his room with a local.
It doesnt hurt, (well the local stings a little) but the actual laser treatment doesnt. You hear the machine clicking and can smell a slight burning smell (sorry if that freaks you out.....) and afterwards you sit in a room for a little while to make sure you are ok.
When the local wears off, there is slight cramping and you bleed a little bit.
I went out for lunch and shopping afterwards!!
I couldnt claim on my health fund back then as the fund didnt 'accept' day procedures as the norm, but things may have changed, but from memory I dont think it cost me a fortune (but I suppose that was in the 'good old days!! hee hee).
Also I then had to go back for checkups (just like a pap smear) and they put iodine inside to check for the cells again, after around 3 months.
I still showed atypical cells, but they were mild and didnt require further treatment.
My checkups became every 6 months and they kept an eye on things.
They thought they would have to treat again in 1996, however it turned out they didnt have to.
FINALLY in 1999 I got the all clear!!
It was such a long drawn out process and I would stress all the time, but it all worked out fine.
I have to go to my gp and have yearly paps now, however I think its a small thing to do considering what I had been through.
I have heard its quite common (at the time I thought I was the only one as no-one talked about it), and have since found out 2 of my friends also had cin.
I know every case is different but I hope this helps you out abit.