[Marhkimov]

Just follow these steps:

1) Download 7z.
2) Install it.
3) Rightclick the RUb 7z file and select "extract here"
4) Now place it in the folder, and make sure everything looks like this:

SilentHunterIII\MODS\RUb\data




btw, not to be rude or anything, but how much computer experience do you have?

I just want to know so that I can better explain these things to you...