Please Help with (Hiss) on Grandfather's audio

Hello,

I have a few audio types of my grandfather and want to add them to a slide show I’m making. The problem is that there is alot of hissing, and clicks (pops). Is there a way to single out a certain noise, and remove it, so you are only left with the sound I want to hear?

Also some of the audio, is low, I think the mic might have been away from him, and it sounds distance, can I rasie the level, to hear it?

Please let me know what program to get, so I can make this happen, and I will get it. I dont care about the price, I just want to make this work.

Last thing, please email me with answer/idea’s, its hard to check all these sites often.

Email: Scaned@aol.com

Thanks so mcuh for all the help
Linda