Extracting some .dat and .bin files, help

Hi,

I want to extract some files and I don't know how to.

The first archive in this download as an example is .bin files from the game Calling, call me weird but I'm interested in extracting the "death letters" and such in nwc24_letter.bin. I know it's compressed somehow, but nothing's impossible and I believe it can be decompressed.

The second archive is for TV Friend Channel, I want to extract the .dat files but I don't know how to.

Please help me, I'll take a QuickBMS script or anything I can use to extract it.

Thank You.

https://mega.co.nz/#F!75snwZ5J!GhF-UiVr5v4Mco0l0PSRgQ