They can't change anything (i.e. can't delete/install ANYTHING). The tightest restriction is too make a file read only (i.e they can only 'see' the files, do nothing else).
Alternatively you can 'hide' the files:
1. Right click on a folder
2. Select 'hide' and they won't be able to see...
Hello all [H]ardOCP members,
This is my first post here, even though I've been reading the main website for between 6 months and 1 year.
Anyway on the main point of my post.
I live in South Africa. It does have DSL and wireless although the highest connection speed there is 1Mbit...