htaccess help

[eluser]megabyte[/eluser]
My htaccess skills are pretty much null, and I have tried figuring it out myself looking online but I am at a loss.

This is what I need to do.

CI is installed in a sub directory called ci

I need it so the following links both point to it

www.example.com/articles points to www.example.com/ci


and

www.example.com/categories points to www.example.com/ci


the obviously the controllers and methods work accordingly from there.

So that if I went to

www.example.com/articles/view/3

it would really be pointing at www.example.com/ci/view/3



Thanks