TRANSMISSION FLUID CHANGE

I have about 190,000 on my 2002 honda accord. I have never changed the transmission fluid as of yet but not sure if I should do a transmission flush or just do a basic drain and refill three to four times to flush it out. I have been told if I have never changed the transmission fluid at this point with that many miles on it to not do it at all. What do you recommend I do?

Is there any filter for transmission, when I change ATF should I change the filter to?

The car reached 107,000 miles and I am sure this needs some extra maintenance. When it was at 60,000, I took it to the dealer and he asked me to change the transmission fluid. He charged a hefty sum. I think the same dealer changing the timing belt much earlier than 60k miles (but I am now not 100% sure). I do not want to go to the dealer, if I can find a good meachanic and it you think it is ok. What are the items that I should ask the mechanic to change at 100k miles? How do I know if he wants me to change something else (transmission oil change seems to be everyone's favorite) how can I tell he is saying the truth? I do not want to unnecessarily do things that are not required, but do want to change all things that I have to change to keep the car going without any problems. Also two problems I notice are, my car always remains hot, even in NY cold winter, I have to run the heat at max 50 degrees - beyond that, it is really hot. My feet always get very very hot in this car even at 50 degrees. The second problem is when I start the car in the morning or in the evening after work, in winter, it makes a terribly screeching noice which remains till I drive the car more than 5 miles. (Does not happen in summer). Finally, should I go to the dealer to ensure the parts are original or can I use a local (recommended) mechanic?

Thanks

You did not mention that I have to change the timing belt. Everyone is asking me to change it. Is it unnecessary?

I was hoping you would answer my previous other questions too, which are:
Also two problems I notice are, my car always remains hot, even in NY cold winter, I have to run the heat at max 50 degrees - beyond that, it is really hot. My feet always get very very hot in this car even at 50 degrees. The second problem is when I start the car in the morning or in the evening after work, in winter, it makes a terribly screeching noice which remains till I drive the car more than 5 miles. (Does not happen in summer). Finally, should I go to the dealer to ensure the parts are original or can I use a local (recommended) mechanic?

Well, I just received this car as a gift, and I love it ! It has apparently been well maintained and runs very well. The shifting seems a tiny bit sticky at times. My question is, when I take it in to have the tranny fluid replaced, should I use an additive? And if so, what would you suggest I have them install? I have done some research and am aware of the possible problems caused by acidic products. I found a product that claims to have very little acid, from a company called " Mega Power". Is this an additive you are familiar with?