1st you need this tool to install mods.
http://www.users.on.net/~jscones/software/
Then watch this video.
http://www.subsim.com/radioroom/show...7&postcount=26
As far as what one or ones to install. i can't help. they are so many mods.
Here is some good video tutorials
http://www.subsim.com/radioroom/show...181538&page=18
Happy Hunting