Grain problem - please help

[Leilani-m]

Hello everyone!
I have a big problem with removing grain from portrait photos. My 2 yo son had a birthday party few days ago, and I thought that it would be great to take candid-like portraits from everyone that I could later give them as a gift.
But (and here the problem starts) the day before I experimented with some low light shot in AV mode, manually adjusting ISO, and left (very high) ISO on manual mode. The day of the birthday party, I was in a rush, serving the meal, watching over my son, entertaining guests, and then I realized that my camera battery is almost empty I rushed to take some photos and forgot about the high ISO.
The result is that I have bunch of photos with enormous amount of grain.

Do you have any advice how to process them so they are usable? Is there any chance? Any idea or suggestion would help.
I mostly use photoshop for post processing. Recently I acquired Lightroom, but I'm not very familiar with it.

I uploaded two pictures so you can see the catastrophy

[edbayani]

try using noiseware community edition. it's free.

[Leilani-m]

I hve Noise Ninja. It cleans up much noise, but the picture is left blured.
I know about the software for removing noise, but I'm afraid that damage is to great to remove much noise and have usable picture.

I was thinking maybe anyone can suggest what will be good idea or point me to direction what to do in post processing (besides removing some or all noise) like convert to b/w, adjusting contrast low-key, high-key, apply some effect etc.

Please, every idea is welcomed and appreciated... I tried remove some noise, and convert to b/w- turns out not so bad, but not quite satisfactory...

[teaking]

Some people suggest LAB mode, or some of the many other ways to seperate your colour information from the luminance information (brightness) and then run your noise removal on the colour layer it is supposed to retain more sharpness as the noise is supposed to be more evident in the colour... or so they say