Linux
I like Vectorlinux and most of the ones that are based off Slackware.
Its very easy to install and sister will have no problems using it. She'll just have trouble installing things. It already has all you need though. (Full office suite, games, 2 or 3 explorers, media players....)
http://www.vectorlinux.com/mod.php?mod=userpage&menu=12&page_id=4
Here is some screenshots:
http://www.vectorlinux.com/mod.php?mod=userpage&menu=10&page_id=10
I like Vectorlinux and most of the ones that are based off Slackware.
Its very easy to install and sister will have no problems using it. She'll just have trouble installing things. It already has all you need though. (Full office suite, games, 2 or 3 explorers, media players....)
http://www.vectorlinux.com/mod.php?mod=userpage&menu=12&page_id=4
Here is some screenshots:
http://www.vectorlinux.com/mod.php?mod=userpage&menu=10&page_id=10